📚 Topic Summary
Shadows are formed when an object blocks light. The shape of the shadow depends on the shape of the object and the position of the light source. When the light source is directly behind an object, the shadow will be directly in front of it. If the light source is to the side, the shadow will be cast to the opposite side.
Understanding how light interacts with objects is fundamental to understanding shadows. The closer the light source, the larger and more defined the shadow will be. The further away, the smaller and less defined. Let's explore this concept further!
🧪 Part A: Vocabulary
Match the following terms with their definitions:
| Term |
Definition |
| 1. Opaque |
A. The area of darkness created when light is blocked. |
| 2. Light Source |
B. An object that does not allow light to pass through. |
| 3. Shadow |
C. The origin of light rays. |
| 4. Translucent |
D. Allowing some light to pass through, but not perfectly clear. |
| 5. Reflect |
E. When light bounces off a surface. |
✍️ Part B: Fill in the Blanks
Fill in the blanks with the correct words from the word bank: opaque, light, shadow, shape, source.
A ________ is formed when an ________ object blocks ________. The ________ of the ________ depends on the position of the ________.
🧠 Part C: Critical Thinking
Imagine you are outside on a sunny day. How does the length of your shadow change throughout the day? Explain why this happens.