LIGHT (grade 3)

Light travels from the ​ (a)   to the ​ (b)   . The light bounces ​ or ​ (c)   ​ off the ​ (d)   into our eyes. This is how I can see the object.

• light source
• object
• reflects

As a scientist, you need to get ..... to .... that this is true.

• evidence to show

• evidence to prove

• proof to show

• proof to prove

The light travels in ​ ​ (a)   lines. Each narrow ​ (b)   is called a ray. ​ (c)   travel from the ​ (d)   in all directions until ​ (e)  

• straight
• beam of light
• Light rays
• light source
• they hit something

Ray diagram show ...............

​ (a)   is the light ray from the ​ (b)   . ​ (c)   is the light ray which bounces of reflects of the ​ (d)   . If the ​ (e)   enter our eyes we will see the object.

• Arriving ray
• light source
• Reflected ray
• object
• reflected ray

Some ​ (a)   - the top layer that is next to the air - are much better at reflecting light than other surfaces. A ​ (b)   has a smooth, shiny surface. When you see your face in a mirror you are seeing ​ ​ (c)   reflecting off the mirror. We call the ​ (d)   of your face in the mirror your ​ (e)   .

• surfaces
• mirror
• light from your face
• reflection
• image.

All objects reflect light or absorb light. If a surface ​ (a)   light very well, you will be able to see your ​ (b)   in the surface. If you can't see your reflection at all in your surface it means the surface ​ (c)   ​ light. It takes the light in and does not reflect it.

• reflects
• reflection
• absorbs

Match the following to show reflection from lowest to highest

• Fairly good reflection

• 1

• No reflection

• 4

• Perfect reflection

• 3

• Poor reflection

• 2

The ​ (a)   is shining because it is a ​ (b)   . The ​Earth and the ​ (c)   are planets because they are ​ (d)   .

• Sun
• star
• Moon
• planets

​ ​ (a)   means "go around". The (b)   orbits the Earth. The Earth orbits the ​ (c)   ​. The Moon takes ​ (d)   to complete its orbit around the Earth. The Earth takes ​ (e)   to complete its orbit around the Sun.

• "Orbit"
• Moon
• Sun
• 29 days or 1 month
• 365 & 1/4 dáy or 1 year