ES Ch 12.1

What is the atmosphere?

• The atmosphere is a layer of liquid surrounding the Earth.
• The atmosphere is the layer of gases that surrounds the Earth.
• The atmosphere is a layer of plasma surrounding the Earth.
• The atmosphere is a layer of solid particles surrounding the Earth.

How did the lab show that air has weight?

• The spreadout newspaper was pushed up by air.

• The wadded up newspaper was weighed down by air.

• The spreadout newspaper was weighed down by air.

• The wadded up newspaper was weighed down by air.

Why couldn't you blow up the balloon when it was in the bottle?

• There wasn't enough force to make the balloon blow up.

• The air in the bottle was pushing outward on the balloon, causing it to blow up.

• The air in the balloon didn't take up enough space to blow the balloon up.

• The air that was inside the bottle had no place to go, so the balloon couldn't displace it.

What keeps the atmosphere around the earth?

• Friction
• Magnetic force
• Solar wind
• Gravity

What is pressure?

• Pressure is the force applied to an object per unit area

• Pressure is the temperature of an object
• Pressure is the speed of an object
• Pressure is the color of an object

What are the U.S. units for pressure? (Select all that apply)

• N/m²

• pounds/in²

• Pascal

• psi

What are the metric units for pressure? (Select all that apply)

• N/m²

• pounds/in²

• Pascal

• psi

What is air pressure? (Select all that apply)

• Pounds per inch

• Force divided by the area over which air is pushing

• atmospheric pressure

• How much mass an object has

• Something that is greater at hot places

Which of these places has the highest air pressure?

• Sea level

• River valley

• Mountain peak

• Outer space

What happens to a closed water bottle when it goes up in elevation?

• It puffs out

• It pushes in

• It evaporates

• It becomes colder