Earth's temperatures are stable because we are surrounded by _________ which allows the right amount of sunlight into the warmth of the Earth

• a cloud layer

• an atmosphere

• gravity

This layer keeps us "not too hot in the summer" and "not too cold in the winter." Scientist call this the ______ effects

• greenhouse effect

• seasonal effect

• ocean effect

• lake effect

How are humans making greenhouse gases of our own?

• Burning fossil fuels in our cars

• with large scale argiculture

• all of these

Too many greenhouse gases in the atmosphere may be block heat from escaping into space and trap too much heat next to the Earth's surface causing:

• Another ice age

• global warming

• earthquakes

• Volcanic eruptions

Something that might happen because of global warming is

• melting polar ice caps

• more reflected sunlight off the ice pack

• lower sea levels

• a sale on bathing suits

Things you can do to help decrease global warming include

• Keep your air conditioner on high

• Turn off your lights when you're not using them

• Keep your freezer door open

• Eat more ice cream

How many people in the world are vulnerable to the effects of climate change?

• 4 million

• 40 million

• 4 billion

• 4 thousand

Which of these countries has the highest per capita CO2 emissions?

• China

• USA

• India

• UK

If the global temperature rises by over 1.5 C what percentage of species will be at risk of extinction?

• 100 percent, all species will be at risk

• 15- 20 percent, at least one in six species

• 0 percent, no species will be at risk

• 10-15 percent, one in 10 species will be at risk

Which three of the following are fossil fuels?

• Coal

• Natural Gas

• Oil

• Wood