Climate Change Quiz

Results

#1. What is the definition of the word “climate”?

The answer is c).

While the weather changes from day to day, climate describes the usual weather conditions experienced at a particular place over time.

For example, the UK has a temperate climate. In winter, it is usually cool and rainy with occasional snow. In summer, it is usually warm and dry with occasional rain.

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#2. Which gas makes up 78% of Earth’s atmosphere?

The answer is c).

78% of Earth’s atmosphere is made up of nitrogen.

Oxygen makes up 21%.

Carbon dioxide makes up less than 1% of Earth’s atmosphere.

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#3. What are greenhouse gases?

The answer is a).

The greenhouse gases in Earth’s atmosphere include water vapour, carbon dioxide and methane. Greenhouse gases help trap heat from the Sun and heat from inside Earth. This heat keeps our planet warm enough to sustain life. Without these gases, our planet would freeze!

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#4. How did greenhouse gases get their name?

The answer is b).

Greenhouse gases produce the greenhouse effect. Like the glass of a greenhouse traps heat inside, greenhouse gases trap heat in Earth’s atmosphere.

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#5. Today, many places on Earth are warmer than they were 120 years ago. By how much has Earth’s temperature changed?

The answer is c).

Records of air temperature show that today many places are on average 1 degree Celsius warmer than they were 120 years ago. This is called global warming.

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#6. Earth’s temperature has increased by 1 degree Celsius in the past 120 years. Why do scientists think this has happened?

The answer is b).

Scientists believe that people have added more greenhouse gases to the atmosphere, which are trapping more of the Sun’s heat on Earth.

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#7. How have humans produced more greenhouse gases?

The answer is a).

Coal, natural gas and oil are fossil fuels. When they are burned, they release large amounts of carbon dioxide and water vapour (which are both greenhouse gases) into the atmosphere.

Fossil fuels are burned in power stations to generate electricity and to make goods in factories. Cars, buses, trucks, trains and planes all use energy. When they are powered by petrol or diesel (which are made from oil) this releases greenhouse gases into the atmosphere.

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#8. Global warming has caused sea levels to rise on Earth by about 23 cm since 1880. Why?

The answer is c).

Ice melting and ocean waters expanding cause sea levels to rise.

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#9. How can planting trees help fight climate change?

The answer is b).

All plants absorb carbon dioxide from the air as they make food during photosynthesis. By growing more trees, we can reduce the amount of carbon dioxide in the atmosphere.

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#10. Which of these types of energy will help stop global warming?

The answer is a).

Wind power and solar power can be used to produce electricity. They produce fewer greenhouse gases than burning coal, oil and natural gas.

These types of power are called renewable energy sources because unlike coal, oil and natural gas, wind and the Sun’s energy will not run out.

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