Unit 4/5 Science Test Review

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other. It is what makes things fall to the ground.

Front

What is friction?

Back

Friction is a force that opposes motion between two surfaces that are in contact. It helps slow down or stop moving objects.

Front

What is magnetism?

Back

Magnetism is a force that can attract or repel certain materials, like iron, and is caused by the motion of electric charges.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the energy of moving particles.

Front

What happens in a complete circuit?

Back

In a complete circuit, electricity flows from the power source, through the wires, and back to the power source, allowing devices like lightbulbs to work.

Front

What is a simple circuit?

Back

A simple circuit consists of a power source (like a battery), a conductor (like a wire), and a load (like a lightbulb) that uses electricity.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electricity in a circuit. When it is closed, electricity flows; when it is open, electricity stops.

Front

What is the effect of adding a switch to a circuit?

Back

Adding a switch allows you to turn the circuit on or off, controlling whether the lightbulb lights up or not.

Front

What is the force that stops a moving car?

Back

Friction is the force that slows down or stops a moving car when brakes are applied.

Front

What is an example of a force that can move objects without touching them?

Back

Magnetism can move objects like iron filings without direct contact.