What causes polar jet streams to form? (1 point)

• high-pressure systems
• warm and cold air masses
O rapid changes in, wind direction
• air masses moving away from each other

• warm and cold air masses

Which explains how ocean currents affect climate? (1 point)

Ocean currents change the temperature of air masses. Warm ocean currents transport heat from the equator to the poles.
Ocean currents change the temperature of landmasses. Warm ocean currents transport heat from the equator to the poles.
Ocean currents change the temperature of landmasses. Cold ocean currents transport heat from the equator to the poles.
Ocean currents change the temperature of air masses. Cold ocean currents transport heat from the equator to the poles.

Ocean currents change the temperature of air masses. Warm ocean currents transport heat from the equator to the poles.

Use this sentence: A student is trying to make a structure to conduct heat quickly during cold winter days.

Which material should the student use?
(1 point)
• plastic
• glass
• wood
• metal

The student should use metal to conduct heat quickly during cold winter days.

Which is a result of excessive convection occurring in the atmosphere? (1 point)

• potential for dangerous sunburns
• air pollution
• more powerful storms
• difficulty breathing

more powerful storms

What makes greenhouse gases different from other atmospheric gases? (1 point)

• Greenhouse gases reduce the amount of natural resources on Earth.
• Greenhouse gases allow thermal energy to pass through the atmosphere and back out into space
• Greenhouse gases trap thermal energy and reflect the sun's harmful radiation back to Earth.
• Greenhouse gases account for the direction in which water and air move.

Greenhouse gases trap thermal energy and reflect the sun's harmful radiation back to Earth.

Use this paragraph: Students in an environmental club research global warming. They present their findings to local industry leaders to persuade them to take action against global warming.

Which action by industry leaders would directly address the causes of global warming?
(1 point)
• sending a team of scientists to study air temperature in a polar region
O agreeing to use wind energy as an alternative to burning fossil fuels
• developing a climate model to show climate change
• adopting a highway to ensure it remains free of trash and other debris