module E unit 1 lesson 1

Winds may be named for their location or for the direction from which they blow. Which winds blow from 30 degrees latitude in both hemispheres almost to the equator?

• easterlies

• westerlies

• trade winds

• the doldrums

Air circulates in Earth's atmosphere. What is the fundamental cause of air circulation in Earth's atmosphere?

• ocean currents

• Earth's gravity

• energy from the Sun

• Earth's magnetic field

The wind in a certain area is blowing from east to west. Which conclusion is most supported by this fact?

• The west is experiencing lower air pressure than the east.

• The west is experiencing higher air pressure than the east.

• The west is experiencing lower air temperature than the east.

• The west is experiencing higher air temperature than the east.

Which statement describes the general pattern of winds near the equator?

• Winds are generally weak because the equator is a region of mostly low air pressure.

• Winds are generally strong because the equator is a region of mostly high air pressure.

• Winds are generally weak because the equator is a region where low and high air pressure atmospheric bands come together.

• Winds are generally strong because the equator is a region where low and high air pressure atmospheric bands come together.

Which statement describes how air moves in a valley between two mountains at night if it is cool air in the valley?

• Air particles are spreading further apart.

• Warm air is pushing cool air downward.

• Air particles are being heated by the Sun.

• Cool air is causing an area of high pressure.

The atmosphere exerts a force (pressure) on Earth. Why does the atmosphere exert pressure on Earth?

• because of the pull of Earth's gravity

• because of electromagnetic radiation from outer space

• because of the effect of the ozone layer on solar radiation

• because of the effect of greeenhouse gases on heat radiating from Earth

Convection cells form a pattern on Earth. Where are the high pressure belts located?

• North Pole, 60 degree North, 30 degrees North, and equator

• North Pole, 30 degrees North, 30 degrees South and South Pole

• equator, 30 degrees south, 60 degrees south, South Pole

• 60 degrees North, 30 degrees North, equator, 30 degrees south, 60 degrees south