NWEA Science Practice Test 7

Front

What is refraction?

Back

Refraction is the bending of light rays as they pass from one medium to another, such as from water to air.

Front

What causes a canyon to form?

Back

Canyons are often formed by rapidly moving water that erodes the rock and soil over time.

Front

Which material is the best conductor of electricity?

Back

Copper is one of the best conductors of electricity, allowing electric current to flow easily.

Front

What role do raccoons play in a food web?

Back

Raccoons are consumers, meaning they eat other organisms for energy.

Front

What happens to bulbs in a series circuit if one wire is cut?

Back

If a wire in a series circuit is cut, all bulbs will go out because the circuit is broken.

Front

What is a food web?

Back

A food web is a system of interconnected food chains that shows how energy and nutrients flow through an ecosystem.

Front

What is the difference between a producer and a consumer?

Back

Producers create their own food through photosynthesis, while consumers eat other organisms for energy.

Front

What is the definition of a conductor?

Back

A conductor is a material that allows electricity to flow through it easily.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil.

Front

How does water erosion shape landscapes?

Back

Water erosion shapes landscapes by wearing away soil and rock, creating features like valleys and canyons.