Week 2: GCSE WJEC Climate Change Causes & Greenhouse Effect

The main human activity that releases greenhouse gases is

• using public transportation and there by reduce the affects of greenhouse gases.

• burning fossil fuels

• texting on cellphones

• eating meat

Which of the following is contributing to an INCREASE in carbon dioxide in the atmosphere?

• deforestation

• photosynthesis

• oceans

• all of the above

• the loss of animal species

What gas from the list below is a cause for global warming?

• Urethane
• Oxygen
• Carbon Dioxide

What do scientists think the effect will be of having more greenhouse gases in our atmosphere?

• More warming of the atmosphere
• More cooling of the atmosphere
• More air in the atmosphere
• Less air in the atmosphere

What do humans do that releases greenhouse gases into the atmosphere?

• Burn fossil fuels (like gas and coal)
• Build cement buildings
• Ride bikes and use solar energy
• Compete in the Olympics

T/F: Water vapor is a greenhouse gas

• True
• False

T/F: Some greenhouse gases are naturally present in the Earth's atmosphere

• True
• False

Which of the following is an example of a greenhouse gas?

• Carbon Dioxide
• Nitrogen
• Oxygen
• Neon

Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.

• water
• gases
• heat
• water vapor

Which is a natural source of greenhouse gases?

• aerosols
• deforestation
• volcanic eruptions
• burning fossil fuels