Chapter Test: Science Light and Shadow

1. What is light?
- Light is a form of energy that travels in straight lines and can be reflected, refracted, or absorbed.

2. What is a shadow?
- A shadow is a dark area created when an object blocks the path of light.

3. How is a shadow formed?
- A shadow is formed when an object blocks the path of light.

4. What are the types of shadows?
- There are two types of shadows: umbra and penumbra.

5. Explain the difference between umbra and penumbra.
- Umbra is the darkest part of a shadow where no light can pass through, while penumbra is a lighter part of a shadow where some light can pass through.

6. How can we change the size of a shadow?
- We can change the size of a shadow by changing the distance between the object and the light source.

7. What is reflection?
- Reflection is the bouncing back of light rays when they hit a surface.

8. What is refraction?
- Refraction is the bending of light rays as they pass through a transparent material such as glass or water.

9. How do we see objects?
- We see objects when light reflects off them and enters our eyes.

10. How do plants make their food?
- Plants make their food through the process of photosynthesis, where they use sunlight, water, and carbon dioxide to produce glucose and oxygen.