Science Final Exam Review #1

What is the function of a cell membrane?

• to control what enters and leaves the cell
• to protect and support the cell
• to perform different functions in each cell
• to form a hard outer covering for the cell

Cells in multi-celled organisms

• are the same size in every part of the organism.
• all have the same structure.
• are often quite different from each other.
• all look the same.

Earth’s atmosphere is important to living things because it

• c. provides all the gases needed.
• contains dust.
• maintains a constant relative humidity.
• is very thin compared to the size of Earth.

Air in the atmosphere has pressure because

• wind moves the air.
• the stratosphere is thick.
• the stratosphere is thick.
• air has mass.

Instruments used to measure air pressure are called

• barometers
• thermometers
• hygrometers
• hydrometers

The air pressure acting on the top of the roof of your house

• comes from all the air above your roof.
• is greater on top of the roof than below it.
• comes from the air only within a few feet of your rooftop.
• is greater underneath your roof than on top of it.

Heat from the sun reaches you by

• conduction.
• light emission.
• radiation.
• convection

Relative humidity can be measured with a(an)  

• psychrometer
• hydrometer
• barometer
• thermometer

Moisture will form faster on a glass when

• the air is dry and the glass is cold.
• the air is humid and the glass is warm
• the air is humid and the glass is cold
• the air is dry and the glass is warm.

When a warm air mass and a cold air mass meet and no movement occurs, the result is a(an)

• cold front
• stationary front
• warm front
• occluded front