Category 2 STAAR review

Front

What type of force is created when rubbing your hands together?

Back

Friction is the force that opposes motion between two surfaces that are in contact.

Front

How does light travel from a source?

Back

Light travels in a straight line away from the light source.

Front

What happens in a circuit when it is built correctly?

Back

All components function as designed, such as bells ringing and bulbs lighting up.

Front

What is an insulator?

Back

An insulator is a material that does not allow electricity to flow through it, preventing the circuit from working.

Front

What is refraction of light?

Back

Refraction is the bending of light as it passes from one medium to another, changing its speed.

Front

What is the role of a battery in a circuit?

Back

A battery provides the electrical energy needed to power the circuit.

Front

What happens when a switch in a circuit is closed?

Back

Closing a switch completes the circuit, allowing electricity to flow and devices to operate.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light from a surface, while refraction is the bending of light as it passes through different materials.

Front

What is the purpose of a light bulb in a circuit?

Back

A light bulb converts electrical energy into light energy.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, such as the Earth pulling objects towards its center.