Light sources worksheet | PDF - Free Printable

Let’s go through each light source one by one and decide if it’s natural (N) or artificial (A).

1. Sun – The sun shines on its own in nature. No human made it. → N

2. TV screen – A TV needs electricity and is made by people. → A

3. Traffic light – This is made by humans to control traffic. Uses electricity. → A

4. Campfire – Fire can happen naturally (like from lightning), but this looks like a controlled campfire, usually started by people. In school tasks like this, fire like this is considered artificial unless stated otherwise. → A

*Wait — let’s double-check:* Actually, fire itself is natural, but when we draw a campfire with logs stacked neatly, it’s often meant to be human-made. But some curricula consider fire as natural because it doesn’t need machines. Hmm… Let’s think simply:
- Natural = happens without humans (sun, moon, stars, lightning, fire from volcano)
- Artificial = made or controlled by humans (lamps, candles, TVs, traffic lights)
Campfire is usually started by humans → so A

5. Moon – The moon reflects sunlight. It’s in space, not made by humans. → N

6. Candles – Humans make candles and light them. → A

7. Street lamp – Made by humans, uses electricity. → A

8. Car headlights – Part of a car, made by humans, uses electricity. → A

9. Lightning – Happens in storms, no humans involved. → N

Now let’s write the answers in order:

Row 1: Sun → N, TV → A, Traffic light → A
Row 2: Campfire → A, Moon → N, Candles → A
Row 3: Street lamp → A, Car headlights → A, Lightning → N

Final Answer:
N, A, A, A, N, A, A, A, N