WCAS Science Test Prep

Front

What type of vegetation is best supported by the polar tundra ecosystem?

Back

Plants that are small and grow close to the ground.

Front

What is the easiest method to separate iron fillings from sand?

Back

Use a magnet to attract the iron fillings.

Front

What force can help objects start moving, stop moving, slow down, or change direction?

Back

Friction.

Front

What is a combination of substances whose chemical properties are different from the properties of the start?

Back

Compound.

Front

How can you increase the concentration of sugar in a sugar and water solution?

Back

Increase the amount of sugar, and keep the amount of water constant.

Front

What type of ecosystem would support animals that need to remain cool?

Back

Desert.

Front

What is a mixture?

Back

A combination of two or more substances where each retains its own properties.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is the role of producers in an ecosystem?

Back

Producers create their own food through photosynthesis and provide energy for other organisms.

Front

What is the definition of an atom?

Back

The smallest unit of a chemical element, consisting of protons, neutrons, and electrons.