Science Quiz

What will happen if water stays in the freezer long enough?

• The water will evaporate

• The water will melt

• The water will freeze

• The mass of the water will increase

What is humidity?

• The measure of how hot or cold something is.

• The speed of the air.

• The amount of water vapor in the air.

• The amount of force the air has.

A barometer measures ____________________.

Evaporation is the process by which water vapor in the air becomes liquid.

• True

• False

Precipitation is the process by which water particles in the air fall to the ground.

• True

• False

Condensation is the process by which liquid water changes to a vapor.

• True

• False

What does a prism do?

• Absorbs light

• Focuses light

• Dims light

• Refracts light

Choose the BEST kind of material to use to reflect light.

• Smooth, shiny

• rough, shiny

• Smooth, dull

• Rough, dull

Explain what a decomposer is and why it is important to ecosystems.

• • A decomposer is an organism that breaks down or eats decaying material for its energy source. 

• Decomposers create their own energy from the sun.

• • They are important because they break down dead organisms into nutrients for producers.

• They are the source of all energy in a necosystem.