Y3 Spring 1 Science- Light

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Lesson 1- light and dark

These are all sources of light. The moon is also a source of light.

1 point

1. True

2. False

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What is the most important source of light on our planet? Explain why.

1 point

1. The stars

2. The sun

3. household lights

4. Fire

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Which statement best describes what is happening in this diagram?

1 point

1. The light shines from the object into your eyes

2. The light shines from a light source (sun) onto the object and then onto our eyes

3. The light shines from our eyes onto an object.

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Lesson 2- Transparent and Opaque

Light does travel in straight lines but can also travel in curved or zig zag lines.

1 point

1. True

2. False

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Match the definitions to the terms.

3 points

block light from passing through.

allow some light to pass through but not clear

allows light to pass through

1. Transparent

2. opaque

3. translucent

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Match the definition to the image.

3 points

translucent

transparent

opaque

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Lesson 3- mirrors

Mirrors...

1 point

1. reflect light

2. deflect light

3. create light

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Match the shape lenses to their definitions

2 points

convex

concave

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The arrows will help you answer this question.

2 points

1. Concave

2. Convex

makes objects appear smaller

makes objects appear larger

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Lesson 4 and 5- shadows

A shadow is created when...

1 point

1. Light gets in the way of an object

2. When the light source stops shining

3. When an object gets in the way of a light source.

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The sun appears to move across the sky throughout the day. Is the sun actually moving?

1 point

1. Yes

2. No

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What best describes the reason why it APPEARS to move but actually doesn't?

1 point

1. The sun does move in a straight line.

2. The Earth is spinning on its axis which gives the illusion of the sun moving

3. The sun moves in a circular direction around the Earth.

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Our shadows remain the same size throughout the day.

1. True

2. False

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Which image shows a shadow at midday? Can you explain why?

0 points

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Shadows are shortest ... (explain why)

1 point

1. in the morning

2. in the afternoon

3. at midday

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Shadows are longest... (explain why)

1 point

1. in the morning

2. in the evening

3. at midday

4. in the morning AND evening

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