Air Pressure and Altitude

Which statement best describes how temperature and air pressure change as altitude increases in the troposphere?

• Both temperature and air pressure increase.

• Both temperature and air pressure decrease.

• Temperature increases, while air pressure decreases.

• Temperature decreases, while air pressure increases.

A weather balloon is about 2 meters wide when it is near the ground. It grows to about 6 meters wide at higher altitudes. Which change MOST likely makes the balloon become wider at higher altitudes?

• More gases enter the balloon.

• The gas inside the balloon gets much hotter.

• The air pressure surrounding the balloon decreases.

• Sunlight breaks down the material of the balloon.

Why is Earth’s atmosphere most concentrated at its surface?

• Gravity pulls the air molecules closer to the surface.

• Global winds move air molecules closer to the surface.

• Global winds move air molecules away from the surface.

• Gravity pushes the air molecules away from the surface.

Tags

NGSS.MS-PS2-5

Which graphic best represents the density of air molecules throughout the atmosphere?

• 
• 
• 
• 

Which phrase best describes Earth’s atmosphere?

• a single layer of gases surrounding Earth

• multiple layers of gases surrounding Earth

• a bubble of air close to the surface of Earth

• clouds and particles in a single layer around Earth

What happens to air pressure as you move upward into the atmosphere?

• increases

• decreases

• stays the same

___________is the result of the weight of a column of air pushing on an area.

• air pressure

• density

• volume

• none of the above

Density of air is greater ________.

• at the top of the mountain

• at the bottom of the mountain

• at the center of the mountain

Tags

NGSS.MS-ESS2-5

As altitude increases, what happens to the air pressure?

• A) It increases

• B) It decreases

• C) It remains the same

• D) It fluctuates

Which of the following best explains why air pressure decreases with altitude?

• A) The gravitational pull is stronger at higher altitudes.

• B) There are fewer air molecules at higher altitudes.

• C) The temperature is higher at higher altitudes.

• D) The air is more humid at higher altitudes.