Spring 2 / UKS2 / Science / Light / S1 and S2

What do light sources do?

• Produce sound energy.

• Attract darkness.

• Emit light energy.

• Absorb light energy.

How does light travel?

• In a straight line at a constant speed.

• In a curved line.

• In a zigzag pattern.

• At different speeds depending on the time of day.

To see objects, light travels from the source to object then the eyes.

• True

• False

Define luminous.

• Not giving off light.

• Light that is created by humans.

• Light that hits an object.

• Shining or glowing in the dark.

Define non-luminous.

• Not giving off light.

• Light that is created by humans.

• Light that hits an object.

• Shining or glowing in the dark.

The Moon is a light source because it looks bright in the sky.

Decide if the statement is true or false.

• True. The Moon is a light source because it looks bright in the sky.

• False. We see part of the Moon that is reflecting light from the sun into our eyes.

How do shadows occur?

• Shadows occur when objects emit light.

• Shadows occur when objects absorb light.
• Shadows occur when an object blocks light.

• Shadows occur when objects reflect light.

When does a shadow change?

• When the shadow feels like it.

• When the light source is tired.

• When the object is happy.

• When the light source changes position.

Define opaque.

• Able to let light through so that you can see through it.

• Allows light to shine through without being fully transparent.

• Does not allow light through and so cannot be transparent.

• The use of too much artificial light, usually at night.

Define translucent.

• Able to let light through so that you can see through it.

• Allows light to shine through without being fully transparent.

• Does not allow light through and so cannot be transparent.

• The use of too much artificial light, usually at night.