50+ Assessing Credibility of Sources worksheets for 2nd Class on ... - Free Printable

Problem Analysis:

The task involves identifying which items are sources of light and which are not. Let's solve each question step by step.

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Question 1: Which of these is a source of light?

#### Options:
- A: Two lit candles.
- B: A feather.
- C: A mirror.
- D: A pencil.

#### Explanation:
- A (lit candles): Candles emit light when they are burning. Therefore, they are a source of light.
- B (feather): Feathers do not produce or emit light on their own. They can reflect light but are not a source of light.
- C (mirror): Mirrors reflect light but do not produce light themselves. They are not a source of light.
- D (pencil): Pencils do not produce or emit light. They are not a source of light.

#### Correct Answer:
A (lit candles)

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Question 2: One of these is not a source of light

#### Options:
- A: Fire (campfire).
- B: Moon.
- C: Light bulb.
- D: Desk lamp.

#### Explanation:
- A (fire): Fire emits light and heat. It is a source of light.
- B (moon): The moon does not produce its own light. It reflects sunlight. Therefore, it is not a source of light.
- C (light bulb): A light bulb emits light when electricity passes through it. It is a source of light.
- D (desk lamp): A desk lamp uses a light bulb to emit light. It is a source of light.

#### Correct Answer:
B (moon)

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Question 3: Some of these items do not produce light

#### Options:
- A: Spoon.
- B: Lit candles.

#### Explanation:
- A (spoon): Spoons do not produce or emit light. They can reflect light but are not a source of light.
- B (lit candles): Lit candles emit light when they are burning. They are a source of light.

#### Items That Do Not Produce Light:
- A (spoon)

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Final Answers:

1. A (lit candles)
2. B (moon)
3. A (spoon)

Boxed Final Answers:

\[
\boxed{A, B, A}
\]