Física
- Física Atômica e Nuclear
- Prova de 2015
- UECE
- Dificuldade: Difícil
- Com imagem
- Código da questão: 34461DC2-8A
DADOS QUE PODEM SER USADOS NESTA PROVA

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DADOS QUE PODEM SER USADOS NESTA PROVA


Analisando as informações dadas, conclui-se corretamente que a ordem de classifcação desse campeonato foi:
Todas las preguntas encuentran respuesta en el texto EXCEPTO.DADOS QUE PODEM SER USADOS NESTA PROVA

DADOS QUE PODEM SER USADOS NESTA PROVA


How do we know the world is getting warmer?
Our planet has been warming rapidly since the dawn of the Industrial Revolution.
The average temperature at the Earth's surface has risen about 1.1C since 1850. Furthermore, each of the last four decades has been warmer than any that preceded it, since the middle of the 19th Century.
These conclusions come from analyses of millions of measurements gathered in different parts of the world. The temperature readings are collected by weather stations on land, on ships and by satellites.
Multiple independent teams of scientists have reached the same result – a spike in temperatures coinciding with the onset of the industrial era. Scientists can reconstruct temperature fluctuations even further back in time. Tree rings, ice cores, lake sediments and corals all record a signature of the past climate.
This provides much-needed context to the current phase of warming. In fact, scientists estimate the Earth hasn't been this hot for about 125,000 years.
How do we know humans are responsible for global warming?
Greenhouse gases - which trap the Sun's heat - are the crucial link between temperature rise and human activities. The most important is carbon dioxide (CO2), because of its abundance in the atmosphere.
We can also tell it's CO2 trapping the Sun's energy. Satellites show less heat from the Earth escaping into space at precisely the wavelengths at which CO2 absorbs radiated energy.
Burning fossil fuels and chopping down trees lead to the release of this greenhouse gas. Both activities exploded after the 19th Century, so it's unsurprising that atmospheric CO2 increased over the same period.
There's a way we can show definitively where this extra CO2 came from. The carbon produced by burning fossil fuels has a distinctive chemical signature.
Available in: https://www.bbc.com/news/science-environment-58954530. Access in: 17 Aug. 2022.
DADOS QUE PODEM SER USADOS NESTA PROVA

Um carro estacionado na sombra durante um dia, com as janelas fechadas, pode conter de 400 a 800 mg de benzeno. Se está ao sol, o nível de benzeno subirá de 2000 a 4000 mg. A pessoa que entra no carro e mantém as janelas fechadas, inevitavelmente aspirará, em rápida sucessão, excessivas quantidades dessa toxina. O benzeno é uma toxina que afeta os rins e o fígado, e o que é pior, é extremamente difícil para o organismo expulsar esta substância tóxica. Por essa razão, os manuais de instruções de uso dos carros indicam que antes de ligar o ar condicionado, deve-se primeiramente abrir as janelas e deixá-las abertas por um tempo de dois minutos.
Com relação ao benzeno, assinale a afirmação
correta.
What is an effective way of getting people to cut down on meat?
A meat tax, or “sin taxes” would be most effective yet almost all government subsidies promote meat consumption. In the UK, the best (1)________of how this might work is the tax on the soft drinks industry. It mainly (2)________manufacturers reformulating products, and didn’t put the burden on the consumer. A meat tax would mainly incentivise manufacturers to put (3)________ meat in products (eg, a sausage might have 60% meat instead of 70%) but there is no government appetite for it.
There are many reasons for this, including lobbying from interest groups saying it would (4)________the domestic farming sector. Neoliberal governments also have a tendency to believe the market will internalise health and environmental costs if better information is provided, and the government does not want to appear to be a “nanny state”, says Dominic Moran, professor of agricultural and resource economics from the University of Edinburgh. There is also concern the burden of taxes falls disproportionately on lower income groups. “But this isn’t (5) ________,” says Moran.
If you make it easier for companies to advertise products that are better for the environment, you expose fewer people to products which are bad for the environment. Good in theory, but it would be really hard to work out what should be regulated because (6) ________ tobacco, eating meat is not all bad for people, it’s just the quantity it is being eaten in. It would also be hard to know what needs to be regulated – would it just be (7) ________ red meat, or chicken too? What about organic?
Available in: https://www.theguardian.com/environment/2022/aug/16/how-can-the-uk-reduce-meat-consumption-and-cut-emissions-aoe?CMP=Share_
AndroidApp_Other. Access in: 16 Aug. 2022 (adapted).
No texto apresentado, foram omitidos sete termos cujas grafias estão contidas nas alternativas a seguir. Assinale a que completa, correta e respectivamente, as lacunas numeradas nele.
DADOS QUE PODEM SER USADOS NESTA PROVA

O fermento é responsável pelo aumento do volume de um bolo, que acontece assim: a temperatura alta faz com que o fermento libere gás carbônico; esse gás se expande e faz o bolo crescer. Quando adicionado na massa, o fermento sofre uma transformação química a partir da reação entre bicarbonato de sódio e fosfato dihidrogenado de cálcio:
NaHCO3 + Ca(H2 PO4)2 —–>
Assinale a opção que apresenta corretamente os
produtos ajustados dessa reação química.