| Questions | Answers |
|---|---|
| What is a natural source of light? | sun |
| What to we call a material that completely blocks the sun? | opaque |
| What color does green grass reflect? | green |
| All light passes through _________ objects. | transparent |
| An artificial source of light is __________. | light bulb |
| Some, but not all light, passes through ________. | translucent |
| A shadow appears when ___________. | light is blocked |