Light and sound recap

An object that gives out light is called a...

• bulb

• light source

• reflect

• wave

The speed of light is...

• 300 million m/s

• 30 m/s

• 2 billion m/s

• 83 miles per hour

Light travels in straight lines

• False

• True

The scientific word that means 'giving out light' is...

• emit

• reflect

• glow

• wave

We can see apples because...

• they emit light

• they reflect light

• our eyes shine light on them

• they are transparent

Which type of object casts the darkest shadows?

• transparent

• translucent

• opaque

Sound is a vibration of...

• particles

• energy

• light

• gas

Sound travels fastest through...

• Solids

• Liquids

• Gases

Which is the fastest?

• Speed of light

• Speed of sound

Which sound is the loudest?

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