Year 10 Science : Light, Reflection, Shadow

Which of the following objects emits light energy?

• A rock

• A flashlight

• A tree

• A pencil

Which of the following objects does not emit light energy?

• A star

• A lamp

• A book

• A candle

What is the main characteristic of non-luminous objects?

• They emit light

• They reflect light

• They absorb light

• They produce sound

What is the main characteristic of opaque materials?

• They reflect light.

• They absorb light.

• They let all light pass through.

• They let no light pass through.

What is a shadow?

• An area with light

• An area with no light

• An area with sound

• An area with heat

What is formed on the screen in the diagram?

• Reflection

• Shadow

• Image

• Refraction

Which part of the shadow is darker in the diagram?

• Penumbra

• Umbra

• Both are equally dark

• Neither is dark

Which part of the shadow is lighter in the diagram?

• Umbra

• Penumbra

• Both are equally light

• Neither is light

Which of the following processes involves light not being reflected?

• Reflection

• Absorption

• Scattering

• Transmission

Which of the following is an example of a material that scatters light?

• A mirror

• A window

• A piece of white paper

• Matt black paint