How does the light travel?
- Light travels in a straight light and in a direction.
- Light travels in a curve line and in all directions.
- Light travels in a straight line and in all directions.
- Light travels in a curve line and in a direction.
What speed does the light travel?
- 300.000 kilometres a second.
- 300.000 kilometres a minute.
- 30.000 kilometres a second.
- 300.000 metres a second.
What are called the bodies that emit light?
- Natural sources.
- Transparent bodies.
- Opaque bodies.
- Light sources.
How many types of light sources are there?
- Transparent and natural.
- Opaque and transparent.
- Natural and artificial.
- Translucent and opaque.
How many types of materials are there dependig on the light?
- Transparent and opaque.
- Natural, transparent and opaque.
- Opaque, transparent and artificial.
- Transparent, translucent and opaque.