Light rays travel in straight lines.

•Shadows occur when an objet blocks light from a light source.

• Opaque object: Some light is absorbed and the rest reflects off.

• Translucent object: Some light can pass through but the rest of the ligth will be reflected

• Transparent object: Ligth rays pass through it easily.

• The object must be opaque or translucent to make a shadow

• A transparent object will not make any shadow, because ligth

will pass straigh through it .

• If an object is moved closer to the light source, the shadow gets bigger.

• If an object is moved further away from the light source, the shadow gets smaller.