5th Grade Science Quarter 2 Review

Front

What is an LED?

Back

LED stands for Light Emitting Diode, a semiconductor device that emits light when an electric current passes through it.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electricity to flow, consisting of a power source, conductors, and a load (like a light bulb).

Front

What happens when a switch is closed in a circuit?

Back

When a switch is closed, it completes the circuit, allowing electricity to flow and powering the devices connected to it.

Front

What is reflection of light?

Back

Reflection is the bouncing back of light when it hits a surface, such as a mirror.

Front

What is the law of reflection?

Back

The law of reflection states that the angle of incidence is equal to the angle of reflection.

Front

What is a hypothesis in scientific experiments?

Back

A hypothesis is a testable statement or prediction about the relationship between two variables.

Front

What is the purpose of a control in an experiment?

Back

A control is a standard for comparison in an experiment, helping to isolate the effects of the variable being tested.

Front

What is force?

Back

Force is a push or pull on an object that can cause it to move, stop, or change direction.

Front

What is mass?

Back

Mass is the amount of matter in an object, usually measured in grams or kilograms.

Front

What is the relationship between mass and force?

Back

The greater the mass of an object, the more force is needed to move it.