Earth in Motion - ScienceKid.org

Earth never stands still — it is spinning and orbiting at the same time. These two motions are responsible for day and night, our seasons, and even why we have leap years.

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Q1 Question 1 of 11

What causes day and night on Earth?

Earth moving around the Sun Earth rotating on its own axis The Moon blocking the Sun's light Clouds covering the Sun

Q2 Question 2 of 11

How long does it take Earth to complete one full rotation?

About 12 hours About 24 hours About 7 days About 365 days

Q3 Question 3 of 11

How long does it take Earth to travel once around the Sun?

About 24 hours About 28 days About 365.25 days About 24 years

Q4 Question 4 of 11

By how many degrees is Earth's axis tilted?

0 degrees (perfectly upright) About 10 degrees About 23.5 degrees About 90 degrees

Q5 Question 5 of 11

What is the main cause of Earth's seasons?

Earth being closer to the Sun in summer Earth's axial tilt as it orbits the Sun Earth orbiting faster in summer The Moon's gravitational pull

Q6 Question 6 of 11

When it is summer in Australia (Southern Hemisphere), what season is it in Canada (Northern Hemisphere)?

Summer Spring Autumn Winter

Q7 Question 7 of 11

During an equinox, what is true about the length of day and night?

It is daytime for 24 hours everywhere Day and night are approximately equal in length everywhere on Earth The Northern Hemisphere gets more daylight than the Southern There is no sunlight anywhere on Earth

Q8 Question 8 of 11

Earth rotates from west to east. In which direction does the Sun appear to move across our sky?

The Sun appears to rise in the west and set in the east The Sun appears to rise in the east and set in the west The Sun moves from north to south The Sun stays in one place in the sky

Q9 Question 9 of 11

Why do we have a leap year every 4 years?

To give people an extra day of rest Because the Sun moves farther away every 4 years Because Earth's orbital year is 365.25 days, so an extra day is added every 4 years Because Earth's rotation slows down every 4 years

Q10 Question 10 of 11

What is a solstice?

When day and night are equal length When Earth is closest to the Sun The day when one hemisphere is most tilted toward or away from the Sun, giving the longest or shortest day of the year When the Moon passes between Earth and the Sun

Q11 Question 11 of 11

How fast is Earth moving as it orbits the Sun?

About 1 km per second About 30 km per second (107,000 km/h) About 300 km per second About the same speed as a car on a highway

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