Sky Science Quiz

Which of the following diagrams shows the orientation of Earth when it is summer in Canada?

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What is the sun and why is it so important for life on Earth?

Day and night are caused by

• the tilt of Earth’s axis
• Earth’s revolution around the sun
• Eclipses
• Earth's rotation on its axis

Earth’s rotation takes about

• 365 days
• 6 months
• 24 hours
• 1 month

One complete revolution of Earth around the sun takes about

• one rotation
• one season
• one year
• one day

Earth has seasons because

• Earth rotates on its axis
• the distance between earth and the sun changes.
• Earth’s axis is tilted as it moves around the sun.
• the temperature of the sun changes.

In Canada, the days appear to be longer in the summer than in the winter because

• we set our clocks ahead for Daylight Savings Time.
• the Earth rotates on its axis at a faster speed.
• the Sun is closer to the Earth.
• the Earth's axis is tilted more towards the Sun.

The following equipment allows you to view the sun safely. Click all that apply.

• telescope
• sunglasses
• mirror
• #14 welder's glass
• eyeglasses

What does “rotation of the Earth” mean?

What does reflect mean? Provide one example found in space.