G12 Chemistry Exam

What powers the water cycle on Earth?

• Gravity

• Solar energy

• Wind

• Volcanoes

What forms clouds in the water cycle?

• Waterfall evaporation

• Air drying up

• Evaporated water cooling

• Earth’s heat

Which rock type forms from cooled magma?

• Igneous

• Sedimentary

• Metamorphic

• Fossilized

What happens when warm and cold air collide?

• Sunshine

• Calm skies

• Storms

• Clear air

Where does weather happen in our atmosphere?

• Stratosphere

• Mesosphere

• Thermosphere

• Troposphere

Which layer of the atmosphere contains the ozone layer?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

What cools the Earth by reflecting sunlight?

• Oceans

• Green plants

• High-albedo surfaces

• Sandstorms

The Earth’s energy balance is affected by what key element?

• Wind speed

• Greenhouse gases

• Solar flares

• Volcanic eruptions

Which feedback increases erosion along the outside curve of a river?

• Reinforcing feedback

• Counterbalancing feedback

• Erosion cycle

• River balance

What type of feedback eventually makes a winding river straighten again?

• Erosive feedback

• Balancing feedback

• Counterbalancing feedback

• Cooling feedback