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Lesson · Grade 1 · Science

Shadows: When Something Blocks the Light

  • Grade 1
  • Science
  • 56 s
  • British Columbia
  • BC1-SC-11

A flashlight shines straight rays at a teddy bear on the floor; the bear blocks some of the light, leaving a dark shadow on the floor on the side away from the light. When the flashlight moves across, over the bear, the shadow moves to the other side, still away from the light.

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In one sentence

The question this lesson answers

Where does a shadow come from?

Here is a teddy bear on the floor.

Transcript

What the lesson says

Where does a shadow come from?

Here is a teddy bear on the floor.

Now we shine a flashlight at it.

Light goes out in straight lines.

The bear blocks some of the light.

Light cannot reach the floor behind the bear.

That dark shape is called a shadow.

The shadow is on the side away from the light.

What if we move the flashlight?

Let's move it across, over the bear.

Look! The shadow moved to the other side.

It is still on the side away from the light.

A shadow forms when something blocks the light.

Move the light, and the shadow moves too.

Curriculum

Where this fits

British Columbia, Grade 1

Science, Physics: properties of light and sound depend on their source and the objects with which they interactBC1-SC-11

Previous: How We See: Giving Off Light or Bouncing ItNext: High and Low, Loud and Soft

The outcomes and strands follow the British Columbia curriculum.

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