Understanding Shadows and Light

The video introduces Mr. Deer and Mr. Crow, which are hand shadows, and explains the concept of shadows. It describes how shadows form when light cannot pass through an object and how the number of light sources affects the number of shadows. The video also demonstrates how the size of a shadow changes with the distance of the light source. Additionally, it covers the properties of light, such as its straight-line travel, and shares trivia about sun clocks and lunar eclipses.

Who are Mr. Deer and Mr. Crow in the video?

• Hand shadows

• Puppets

• Real animals

• Cartoon characters

What is a shadow?

• A type of light source

• Light that cannot pass through an object

• An object that emits light

• A reflection of light

Which of the following can have a shadow?

• A tree

• Water

• Air

• Light

What determines the number of shadows an object can have?

• The shape of the object

• The size of the object

• The number of light sources

• The color of the object

How does the distance between the light source and the object affect the shadow size?

• Distance does not affect shadow size

• Closer light makes the shadow larger

• Farther light makes the shadow larger

• Closer light makes the shadow smaller

What happens to the shadow when the light source is directly above the object?

• The shadow changes color

• The shadow disappears

• The shadow becomes the longest

• The shadow becomes the shortest

What is a common misconception about how light travels?

• Light can bend around objects

• Light travels in a straight line

• Light can stop moving

• Light travels in a curved path

What ancient tool used shadows to estimate time?

• Sundial

• Water clock

• Hourglass

• Pendulum

What causes a lunar eclipse?

• The moon blocking the sun

• The earth's shadow on the moon

• The moon's shadow on the earth

• The sun's shadow on the earth