Geografia
História da GeografiaUECE · 2014DifícilEntre para guardar nos favoritosA expressão “segunda natureza” serve para
designar
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CA1C4C1A-B8 C680DC0D-B8 Química
Interações Atômicas: Ligações Iônicas, Ligações Covalentes e Ligações Metálicas. Ligas Metálicas.UECE · 2014DifícilEntre para guardar nos favoritosDADOS QUE PODEM SER USADOS NESTA PROVA:
ELEMENTO QUÍMICO NÚMERO ATÔMICO MASSA ATÔMICA
H 1 1,0
He 2 4,0
Li 3 6,9
C 6 12,0
N 7 14,0
O 8 16,0
F 9 19,0
Ne 10 20,2
Na 11 23,0
Si 14 28,1
P 15 31,0
S 16 32,0
Cl 17 35,5
K 19 39,0
Ca 20 40,0
Mn 25 55,0
Co 27 58,9
Zn 30 65,4
Ge 32 72,6
As 33 75,0
Nb 41 93,0
Pb 82 208,0
No estudo das ligações químicas, deparamo-nos com dois conceitos importantes que são a carga formal e a ressonância, para melhor definir a estrutura molecular mais plausível. Em relação aos conceitos mencionados e a estruturas moleculares, assinale a afirmação correta.C66EF531-B8 Química
Transformações QuímicasUECE · 2014DifícilEntre para guardar nos favoritosDADOS QUE PODEM SER USADOS NESTA PROVA:
ELEMENTO QUÍMICO NÚMERO ATÔMICO MASSA ATÔMICA
H 1 1,0
He 2 4,0
Li 3 6,9
C 6 12,0
N 7 14,0
O 8 16,0
F 9 19,0
Ne 10 20,2
Na 11 23,0
Si 14 28,1
P 15 31,0
S 16 32,0
Cl 17 35,5
K 19 39,0
Ca 20 40,0
Mn 25 55,0
Co 27 58,9
Zn 30 65,4
Ge 32 72,6
As 33 75,0
Nb 41 93,0
Pb 82 208,0
Com o título O Novo Ouro, a publicação Química Nova, de dezembro de 2013, trata da importância dos elementos conhecidos como terras raras. Segundo a matéria, são fundamentais para a fabricação de motores elétricos, turbinas eólicas, superímãs, telefones inteligentes, computadores, tablets, lâmpadas de LED, mísseis e muitos outros produtos. Sobre os elementos terras raras, pode-se afirmar corretamente queC63DC2EF-B8 Física
DinâmicaUECE · 2014DifícilEntre para guardar nos favoritosUm sistema massa-mola oscila sem atrito. A figura a seguir ilustra alguns instantâneos desse movimento durante um tempo inferior a um período de oscilação. As duas linhas tracejadas indicam os extremos do deslocamento das massas.
As setas indicam a direção e o sentido do vetor velocidade da massa. Nos instantâneos 1 e 4, a mola está parcialmente comprimida; em 2 e 3, a mola está parcialmente distendida. O trabalho realizado pela força elástica em um intervalo de tempo muito pequeno e em torno de cada um dos instantâneos é t1 , t2 , t3 e t4 . Assim, é correto afirmar que
C62F385C-B8 Física
Ondas e Propriedades OndulatóriasUECE · 2014DifícilEntre para guardar nos favoritosUma onda sonora vinda de uma sirene chega a um determinado ponto próximo a um ouvinte. É correto afirmar que, em decorrência dessa onda sonora, nesse ponto háC06475DC-B8 Inglês
Interpretação de texto | Reading comprehensionUECE · 2014DifícilEntre para guardar nos favoritosTEXT
For a $14.95 monthly membership, the website Lumosity promises to “train” your brain with games designed to stave off mental decline. Users view a quick succession of bird images and numbers to test attention span, for instance, or match increasingly complex tile patterns to challenge memory.
While Lumosity is perhaps the best known of the brain-game websites, with 50 million subscribers in 180 countries, the cognitive training business is booming. Happy Neuron of Mountain View, Calif., promises “brain fitness for life.” Cogmed, owned by the British education company Pearson, says its training program will give students “improved attention and capacity for learning.” The Israeli firm NeurMuch of the focus of theonix is developing a brain stimulation and cognitive training program that the company calls a “new hope for Alzheimer’s disease.”
Much of the focus of the brain fitness business has been on helping children with attention-deficit problems, and on improving cognitive function and academic performance in healthy children and adults. An effective way to stave off memory loss or prevent Alzheimer’s — particularly
The problem, Dr. Doraiswa if it were a simple website or video game — is the “holy grail” of neuroscience, said Dr. Murali Doraiswamy, director of the neurocognitive disorders program at Duke Institute for Brain Sciences. The problem, Dr. Doraiswamy added, is that the science of cognitive training has not kept up with the hype. “Almost all the marketing claims made by all the companies go beyond the data,” he said. “We need large national studies before you can conclude that it’s ready for prime time.”
For centuries, scientists believed that most brain development occurred in the first few years of life — that by adulthood the brain was largely immutable. But over the past two decades, studies on animals and humans have found that the brain continues to form new neural connections throughout life. But questions remain whether an intervention that challenges the brain — a puzzle, studying a new language or improving skill on a video game — can really raise intelligence or stave off normal memory loss.
A series of studies in recent years has suggested that certain types of game training can improve a person’s cognitive performance. In February 2013, however, an analysis of 23 of the best studies on brain training, led by the University of Oslo researcher Monica Melby-Lervag, concluded that while players do get better, the increase in skill hasn’t been shown to transfer to other tasks. In other words, playing Sudoku or an online matching game makes you better at the game, but it doesn’t make you better at math or help you remember names or where you left your car keys.
But other studies have been more encouraging. Last September, the journal Nature published a study by researchers at the University of California, San Francisco, that showed a driving game did improve short-term memory and longterm focus in older adults. The findings are significant because the research found that improvements in performance weren’t limited to the game, but also appeared to be linked to a strengthening of older brains over all, helping them to perform better at other memory and attention tasks.
In addition, brain monitoring during the study showed that in older participants, game training led to bursts in brain waves associated with attention; the patterns were similar to those seen in much younger brains.
Earlier this year, the National Institutes of Health invited applications to more rigorously test brain fitness training to stave off cognitive decline. Researchers say they hope the effort will help establish a consistent standard for determining whether a brain-training intervention works.
But while the science remains unclear, entrepreneurs have seized on what is likely to be a sizable marketing opportunity. In May, hundreds of researchers and businesses will gather in San Francisco for the NeuroGaming Conference and Expo to explore the latest research and the newest technology.
While there is no real risk to participating in the many unproven brain-training games available online and through smartphones, experts say, consumers should know that the scientific jury is still out on whether they are really boosting brain health or just paying hundreds of dollars to get better at a game.
“I’m not convinced there is a huge difference between buying a $300 subscription to a gaming company versus you yourself doing challenging things on your own, like attending a lecture or learning an instrument,” Dr. Doraiswamy said. “Each person has to personalize for themselves what they find fun and challenging and what they can stick with.”
From: www.nytimes.com, March 10, 2014
While scientific research and brain gaming companies are not working with the same assumptions, Dr. Doraiswamy recommends that peopleC060EFE2-B8 Inglês
Interpretação de texto | Reading comprehensionUECE · 2014DifícilEntre para guardar nos favoritosTEXT
For a $14.95 monthly membership, the website Lumosity promises to “train” your brain with games designed to stave off mental decline. Users view a quick succession of bird images and numbers to test attention span, for instance, or match increasingly complex tile patterns to challenge memory.
While Lumosity is perhaps the best known of the brain-game websites, with 50 million subscribers in 180 countries, the cognitive training business is booming. Happy Neuron of Mountain View, Calif., promises “brain fitness for life.” Cogmed, owned by the British education company Pearson, says its training program will give students “improved attention and capacity for learning.” The Israeli firm NeurMuch of the focus of theonix is developing a brain stimulation and cognitive training program that the company calls a “new hope for Alzheimer’s disease.”
Much of the focus of the brain fitness business has been on helping children with attention-deficit problems, and on improving cognitive function and academic performance in healthy children and adults. An effective way to stave off memory loss or prevent Alzheimer’s — particularly
The problem, Dr. Doraiswa if it were a simple website or video game — is the “holy grail” of neuroscience, said Dr. Murali Doraiswamy, director of the neurocognitive disorders program at Duke Institute for Brain Sciences. The problem, Dr. Doraiswamy added, is that the science of cognitive training has not kept up with the hype. “Almost all the marketing claims made by all the companies go beyond the data,” he said. “We need large national studies before you can conclude that it’s ready for prime time.”
For centuries, scientists believed that most brain development occurred in the first few years of life — that by adulthood the brain was largely immutable. But over the past two decades, studies on animals and humans have found that the brain continues to form new neural connections throughout life. But questions remain whether an intervention that challenges the brain — a puzzle, studying a new language or improving skill on a video game — can really raise intelligence or stave off normal memory loss.
A series of studies in recent years has suggested that certain types of game training can improve a person’s cognitive performance. In February 2013, however, an analysis of 23 of the best studies on brain training, led by the University of Oslo researcher Monica Melby-Lervag, concluded that while players do get better, the increase in skill hasn’t been shown to transfer to other tasks. In other words, playing Sudoku or an online matching game makes you better at the game, but it doesn’t make you better at math or help you remember names or where you left your car keys.
But other studies have been more encouraging. Last September, the journal Nature published a study by researchers at the University of California, San Francisco, that showed a driving game did improve short-term memory and longterm focus in older adults. The findings are significant because the research found that improvements in performance weren’t limited to the game, but also appeared to be linked to a strengthening of older brains over all, helping them to perform better at other memory and attention tasks.
In addition, brain monitoring during the study showed that in older participants, game training led to bursts in brain waves associated with attention; the patterns were similar to those seen in much younger brains.
Earlier this year, the National Institutes of Health invited applications to more rigorously test brain fitness training to stave off cognitive decline. Researchers say they hope the effort will help establish a consistent standard for determining whether a brain-training intervention works.
But while the science remains unclear, entrepreneurs have seized on what is likely to be a sizable marketing opportunity. In May, hundreds of researchers and businesses will gather in San Francisco for the NeuroGaming Conference and Expo to explore the latest research and the newest technology.
While there is no real risk to participating in the many unproven brain-training games available online and through smartphones, experts say, consumers should know that the scientific jury is still out on whether they are really boosting brain health or just paying hundreds of dollars to get better at a game.
“I’m not convinced there is a huge difference between buying a $300 subscription to a gaming company versus you yourself doing challenging things on your own, like attending a lecture or learning an instrument,” Dr. Doraiswamy said. “Each person has to personalize for themselves what they find fun and challenging and what they can stick with.”
From: www.nytimes.com, March 10, 2014
Recent research undertaken with older adults at the University of California presented significant results in relation to cognitive training using a certain driving game. They are significant due to the evidence thatC05AE75A-B8 Inglês
Interpretação de texto | Reading comprehensionUECE · 2014DifícilEntre para guardar nos favoritosTEXT
For a $14.95 monthly membership, the website Lumosity promises to “train” your brain with games designed to stave off mental decline. Users view a quick succession of bird images and numbers to test attention span, for instance, or match increasingly complex tile patterns to challenge memory.
While Lumosity is perhaps the best known of the brain-game websites, with 50 million subscribers in 180 countries, the cognitive training business is booming. Happy Neuron of Mountain View, Calif., promises “brain fitness for life.” Cogmed, owned by the British education company Pearson, says its training program will give students “improved attention and capacity for learning.” The Israeli firm NeurMuch of the focus of theonix is developing a brain stimulation and cognitive training program that the company calls a “new hope for Alzheimer’s disease.”
Much of the focus of the brain fitness business has been on helping children with attention-deficit problems, and on improving cognitive function and academic performance in healthy children and adults. An effective way to stave off memory loss or prevent Alzheimer’s — particularly
The problem, Dr. Doraiswa if it were a simple website or video game — is the “holy grail” of neuroscience, said Dr. Murali Doraiswamy, director of the neurocognitive disorders program at Duke Institute for Brain Sciences. The problem, Dr. Doraiswamy added, is that the science of cognitive training has not kept up with the hype. “Almost all the marketing claims made by all the companies go beyond the data,” he said. “We need large national studies before you can conclude that it’s ready for prime time.”
For centuries, scientists believed that most brain development occurred in the first few years of life — that by adulthood the brain was largely immutable. But over the past two decades, studies on animals and humans have found that the brain continues to form new neural connections throughout life. But questions remain whether an intervention that challenges the brain — a puzzle, studying a new language or improving skill on a video game — can really raise intelligence or stave off normal memory loss.
A series of studies in recent years has suggested that certain types of game training can improve a person’s cognitive performance. In February 2013, however, an analysis of 23 of the best studies on brain training, led by the University of Oslo researcher Monica Melby-Lervag, concluded that while players do get better, the increase in skill hasn’t been shown to transfer to other tasks. In other words, playing Sudoku or an online matching game makes you better at the game, but it doesn’t make you better at math or help you remember names or where you left your car keys.
But other studies have been more encouraging. Last September, the journal Nature published a study by researchers at the University of California, San Francisco, that showed a driving game did improve short-term memory and longterm focus in older adults. The findings are significant because the research found that improvements in performance weren’t limited to the game, but also appeared to be linked to a strengthening of older brains over all, helping them to perform better at other memory and attention tasks.
In addition, brain monitoring during the study showed that in older participants, game training led to bursts in brain waves associated with attention; the patterns were similar to those seen in much younger brains.
Earlier this year, the National Institutes of Health invited applications to more rigorously test brain fitness training to stave off cognitive decline. Researchers say they hope the effort will help establish a consistent standard for determining whether a brain-training intervention works.
But while the science remains unclear, entrepreneurs have seized on what is likely to be a sizable marketing opportunity. In May, hundreds of researchers and businesses will gather in San Francisco for the NeuroGaming Conference and Expo to explore the latest research and the newest technology.
While there is no real risk to participating in the many unproven brain-training games available online and through smartphones, experts say, consumers should know that the scientific jury is still out on whether they are really boosting brain health or just paying hundreds of dollars to get better at a game.
“I’m not convinced there is a huge difference between buying a $300 subscription to a gaming company versus you yourself doing challenging things on your own, like attending a lecture or learning an instrument,” Dr. Doraiswamy said. “Each person has to personalize for themselves what they find fun and challenging and what they can stick with.”
From: www.nytimes.com, March 10, 2014
According to Dr. Doraiswamy, from the Duke Institute for Brain Sciences, the problem about many of the cognitive training programs being offered nowadays is thatC0521C90-B8 Biologia
Esponjas e CnidáriosUECE · 2014DifícilEntre para guardar nos favoritosOs recifes de corais são ecossistemas de grande biodiversidade, formados principalmente por carbonato de cálcio, proveniente de esqueletos de animais e algas coralinas que se depositam nos oceanos ao longo de milhares de anos. Sobre os recifes de corais, pode-se afirmar corretamente queC03A6234-B8 Química
Equilíbrio QuímicoUECE · 2014DifícilEntre para guardar nos favoritos
Em 1909, o químico dinamarquês Soren Peter Lauritz Sorensen (1868-1939) introduziu na literatura química o termo pH, que significa potencial hidrogeniônico e afere a acidez, a alcalinidade, ou a neutralidade de uma solução a uma determinada temperatura. Sabe-se, por exemplo, que o produto iônico da água neutra a 45°C é igual a 4,0 x 10-14 e log 2 = 0,30 (aproximadamente). Sobre o pH da água, assinale a afirmação FALSA.C0311DC8-B8 Física
Campo e Força MagnéticaUECE · 2014DifícilEntre para guardar nos favoritosUm fio condutor reto é percorrido por uma corrente elétrica constante, que gera um campo magnético nas suas proximidades. Nessa situação, é correto afirmar queC018D538-B8 Geografia
Geografia PolíticaUECE · 2014DifícilEntre para guardar nos favoritosDesde a deflagração da crise venezuelana [...], o Brasil expressou suas posturas a respeito do tema, por meio de entidades regionais como a Unasul e o Mercosul, o bloco que integra junto com a Venezuela, a Argentina, o Paraguai e o Uruguai.Por que o Brasil tem sido cauteloso em relação à crise na Venezuela? http://www.bbc.co.uk/portuguese/ noticias/2014/03/140312_venezuela_cautela_lk.shtml 12/03/2014O Governo brasileiro se posicionou em relação a esta questãoC006EAFF-B8 História
História GeralUECE · 2014DifícilEntre para guardar nos favoritosAtente para o seguinte excerto a respeito da Revolução Islâmica: “O problema é que o Ocidente não entende o Irã, país persa e não árabe, e não aceita a Revolução Islâmica de 1979”.(Carta, G. O Irã desconhecido in: Carta Capital, São Paulo, nº 792, p.30-37, 2014.)Sobre a Revolução Islâmica, é correto afirmar queBFD3A4D6-B8 Português
Gêneros TextuaisUECE · 2014DifícilEntre para guardar nos favoritosO texto 2 (subdividido em seções) faz uma reflexão sobre a maneira como se comporta, em determinado momento, a sociedade brasileira, que, mais cedo ou mais tarde, teria que integrar negros e mulatos.
Texto 2
Releia o parágrafo 2 do texto 1. Você deve ter percebido que o Paulo César de que fala o texto 2 é o mesmo Paulo César de que fala Nélson Rodrigues no texto 1. Cotejando esses dois textos, marque a opção INCORRETA.BFC2769D-B8 Português
Figuras de LinguagemUECE · 2014DifícilEntre para guardar nos favoritos
Sobre o trecho seguinte: “Há um tipo de vaia que explode como uma força da natureza. Sim. Uma vaia que venta, chove, troveja e relampeja” (linhas 14-16), é INCORRETO afirmar queBFBD0B94-B8 Português
Interpretação de TextosUECE · 2014DifícilEntre para guardar nos favoritos
Assinale a opção que apresenta uma voz que NÃO é a voz do enunciador.649D2C0B-B8 Espanhol
Verbos | VerbosUECE · 2014DifícilEntre para guardar nos favoritosLa forma verbal de la frase “María ha llegado hoy” está en el
649A3E61-B8 Espanhol
Acentuação | El Acento y la TildeUECE · 2014DifícilEntre para guardar nos favoritosSegún el acento diacrítico, señala el análisis correcto.64932C56-B8 Espanhol
Artigos | ArtículosUECE · 2014DifícilEntre para guardar nos favoritosApunta el uso correcto del artículo “el”.648CC88D-B8 Espanhol
Flexão do Nome | Flexíon de las PalabrasUECE · 2014DifícilEntre para guardar nos favoritos. El plural de la expresión “este álbum” es