How light sources help us see | 5th grade Science Worksheet ... - Free Printable

It looks like you've uploaded an image of a science activity page titled "See the light" from a children's educational resource, likely aimed at teaching basic principles of light and shadows. Since I can't view images directly, I'll interpret the content based on your description and the visible text.

Let’s go through the task, background knowledge, and science investigation step by step and solve it logically.

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🔍 Background Knowledge:

> *The Sun, a lamp, and the stars are all sources of light that we can see when they light up some other object. But not all objects give off visible light. We see our mothers and fathers only as a dark or clear because light from a light source (like the Sun) reflects off them to our eyes. A red sweater appears red because when light strikes the sweater, it is reflected back to our eyes.*

This section explains:
- Light sources: Objects that emit their own light (e.g., Sun, lamp).
- Non-light sources: Objects that don’t emit light but reflect light (e.g., people, clothes).
- Color perception: An object appears a certain color because it reflects that color of light.

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🧪 Science Activity:

> *You can see both the light bulb and the chair. Draw arrows to show how the light from the light bulb travels so that we can see both.*

#### ✔ Solution:
To complete this task:
1. Draw arrows from the light bulb to:
- The chair (to show light hitting the chair).
2. Then draw arrows from the chair to the observer’s eye.
3. Also, draw an arrow from the light bulb directly to the observer’s eye (since the bulb itself emits light).

This illustrates:
- Light travels in straight lines.
- We see the light bulb because it emits light directly into our eyes.
- We see the chair because light reflects off the chair and enters our eyes.

💡 Key concept: We see non-luminous objects because light bounces off them.

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🔬 Science Investigation:

> *(1) Into a dark room with a book and flashlight. Can you see the cover of the book? Can you see the colors and words on the book? Stick white the flashlight on the book. How does what you see now compare with what you saw without light? Explain any differences. What to model in order to see objects?*

#### ✔ Step-by-step Answer:

1. Without light (in a dark room):
- You cannot see the book cover.
- You cannot see colors or words.
- Reason: There is no light to reflect off the book to your eyes.

2. With flashlight on the book:
- You can now see the cover.
- Colors and words become visible.
- Reason: The flashlight provides light that reflects off the book and reaches your eyes.

3. Comparison:
- Without light → no visibility.
- With light → objects become visible due to reflection.

4. What do you need to see objects?
- You need:
- A light source (like a flashlight or Sun).
- Light to reflect off the object.
- The reflected light to reach your eyes.

💡 Conclusion: To see an object, light must travel from a source, reflect off the object, and enter your eyes.

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✔ Final Summary:

| Concept | Explanation |
|--------|-------------|
| We see light sources | Because they emit light directly into our eyes (e.g., light bulb). |
| We see non-light sources | Because light reflects off them (e.g., chair, book). |
| Why we see colors | Objects reflect certain colors of light. A red sweater reflects red light. |
| Seeing in darkness | Impossible unless a light source illuminates the object. |

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🖼️ Visual Instructions (for drawing):

If you were to draw this:
- Draw arrows from the light bulb to the chair.
- Draw arrows from the chair to the eye.
- Draw arrows from the light bulb directly to the eye.
- Label: "Light emitted", "Light reflected".

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Let me know if you'd like a printable version of the explanation or help drawing the arrows!