Light and Sound in grade 4

These objects _______ light: sun, TV, flashlight (torch)

• refraction

• emit

• absorb

• moon

Sound and light can be ________. When I look in the mirror, my image is......

• refracted

• reflected

• invisible

• gorgeous dahling!!

We did an experiment with water in a jar and a coin and another with water in a jar and a chopstick. We discovered that light slows down when it passed through the water and made the coin ____ and the chopstick looked like it ___.

• nothing changed

• disappear, disappear

• become absorbed by the water

• disappear, broke

Answer explanation

The chopstick and coin experiment demonstrated which property of light?

• refraction

• reflection

• magic

• transparent

There are two kinds of light.

• sun and moon

• artificial and natural

• lightbulbs and TVs

• There are more than two kinds of light

This is NOT a source of natural light.

• sun

• firefly

• forest fire

• flashlight

The first property of sound we experimented with demonstrated that sound __________

• bends

• moves

• travels

• smells

When we say that 'sound can be modified' we mean......

• sound can move down a string from one cup to another

• I have no idea what modified means

• sound can not be modified

• sound changes, it can get louder and quieter

Both sound and light travel in ________.

• packs

• waves

• a car

• they don't travel

An echo is an example of a property of sound.

• TRUE

• FALSE

Answer explanation

An echo explains the property of sound being REFLECTED (it comes back to you)