Matter, Circuit, and Light

Front

What is matter?

Back

Matter is anything that has mass and takes up space. It can exist in different states, such as solid, liquid, and gas.

Front

What are physical properties of matter?

Back

Physical properties are characteristics that can be observed or measured without changing the substance, such as color, shape, size, and density.

Front

What is a circuit?

Back

A circuit is a closed path through which electric current flows. It typically includes a power source, wires, and a load (like a light bulb).

Front

What is light?

Back

Light is a form of energy that travels in waves and can be seen by the human eye. It is essential for vision.

Front

What is density?

Back

Density is the mass of an object divided by its volume. It determines whether an object will float or sink in a fluid.

Front

What is the difference between a conductor and an insulator?

Back

A conductor allows electricity to flow through it easily (like copper), while an insulator resists the flow of electricity (like rubber).

Front

What is reflection of light?

Back

Reflection is when light bounces off a surface. For example, you can see your image in a mirror because of reflection.

Front

What is refraction of light?

Back

Refraction is the bending of light as it passes from one medium to another, like from air to water.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition, such as melting or freezing.

Front

What is a chemical change?

Back

A chemical change occurs when a substance transforms into a different substance, involving a change in chemical properties, such as rusting or burning.