Unit 8.4 Light and Sound

Light that CANNOT pass through an object

• Transparent

• Translucent

• Opaque

• Shiny

Light always travels

• in curvy lines

• in straight lines

• in elliptical lines

• in 3 lines

Which way of communicating will NOT work for astronauts in outer space?

• waving a hand

• using a radio

• ringing a bell

• flashing a light

Sound is created by:

• Bouncing up and down

• movement

• vibrations

The major source of light is:

• The Sun

• The Moon

• The Planets

• Fire

The picture shows an image produced by a magnifying lens. What statement best describes this image?

• Black and white, upright and same size as object

• Same colour as object, same size as object and upright

• Same colour as object, smaller than object and upside down

The moon is considered as a:

• luminous object

• non-luminous object

• transparent

• translucent

What happens to your pupils in the LIGHT?

• Get smaller

• Get bigger

• Change colour

• Fall out

What happens to your pupils in the DARK?

• Get smaller

• Get bigger

• Change colour

• Fall out

Using the URL link below copy and paste to watch the video. https://youtu.be/4GBBSomUY90

The video shows the production of:

• Light waves

• Sound waves

• Clapping waves

• Beam waves