APES Global Change Practice MC

 When ocean temperatures rise, _______________ rises as well due to _________ melting.

• water level, snow

• ice level, ice

• sea level, glaciers

• land level, ice

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

• lower levels of ozone in the atmosphere

• lower levels of nitrogen in the atmosphere

• higher levels of carbon dioxide in the atmosphere

• higher levels of oxygen in the atmosphere

Visible light reaches Earth’s surface while infrared light is trapped as heat. Which characteristic of Earth’s atmosphere causes this to happen?

• the hole in the ozone

• the greenhouse effect

• atmospheric pressure

• the inversion layer

Which of the following have been linked to climate change? 

• droughts

• flooding

• melting of polar ice caps

• all of the above

How do scientists collect evidence about climate? 

• using remote sensing from space with satellites

• by ground-based measurements of surface temperatures, carbon dioxide concentration and sea level

• by collecting “proxy data” from tree rings, ice cores, and historical records

• all of the above

Which of the following gases DOES NOT trap heat?

• carbon dioxide

• nitrogen

• water vapor

• methane

Greenhouse Gases

• Absorb Heat

• Reflect Heat

• Create Heat

• Are Hot

Which of the following is NOT a greenhouse gas?

• O₂ (Oxygen)

• CO₂ (Carbon Dioxide)

• H₂O (Water)

• O₃ (Ozone)

Which of the following is the largest source of CO₂ in the atmosphere?

• Transpiration (animals breathing out)

• Volcanoes 

• Fossil Fuels

• Plants decomposing or burning (deforestation)

Which of the following is a positive feedback loop?

• As it gets hotter, more clouds form and reflect light away from the earth.

• Water as a greenhouse gas heats the earth so more water evaporates.

• Ice melts when it gets hot, so less light is reflected from earth, which makes the earth more hot.

• Options B and C