Earth, Moon, and Sun Practice

What two factors are most important when demonstrating why the length of day and night change throughout the year?

• The speed of Earth's rotation and the distance of

  Earth from the Sun.

• The tilt of Earth on its axis and Earth's orbit around

  the Sun.

• The distance of Earth from the Sun and Earth's

  orbit around the Sun.

• The direction of Earth's rotation and the speed of

  Earth's rotation.

In the model, the flashlight represents the sun shining on the Earth. It shows that Morocco has longer days and shorter nights. How would we model shorter days and longer nights?

• Move the flashlight to the other side of the globe.

• Change the direction that the globe is spinning.

• Move the flashlight closer to the globe.

• Spin the globe faster.

Answer explanation

If the flashlight (the Sun) is on the other side, then Morocco is experiencing Winter. While in the model, it is experiencing Summer.

Why does the length of day change during the year?

• because Earth spins on its axis and moves around the Sun.

• because Earth spins on its axis and moves around

  the Moon.

• because the Sun tilts on its axis and moves around

  the Moon.

• because the Sun tilts on its axis and moves around

  Earth.

Answer explanation

Day and night = Earth spinning on its axis, titled = rotation

Changes in the length of daylight = seasons = revolution = moving AROUND the Sun

This model shows Earth orbiting the Sun. At which location of orbit does the Northern Hemisphere have the longest days and shortest nights?

• X because the Southern Hemisphere has direct sunlight for a longer time period.

• Z because the Northern Hemisphere has direct sunlight for a longer time period.

• W because Earth is at its closest distance from the Sun during its elliptical orbit.

• Y because Earth is at its farthest distance from the Sun during its elliptical orbit.

It is winter in the Northern Hemisphere, what is this caused by?

• the tilt of Earth's axis.

• the power of the Sun's rays.

• the degree of the Sun's rays hitting the equator.

• the distance of Earth from the Sun.

This model shows Earth in the middle of its orbit around the Sun. Why don't all parts of the Earth have day and night at the same time?

• The Moon revolves around Earth, and it blocks the

  Sun from certain parts of Earth at different times.

• Earth revolves around the Sun on an axis, and it is

  only day when that part of Earth is tilted toward the

  Sun.

• Earth rotates on its axis, and only the part of Earth

  facing the Sun experiences day.

• The Sun revolves around Earth, and it can only

  shine on half of Earth at one time.

How long does it take Earth to make one full rotation on its

axis?

• 1 week

• 1 month

• 365 days

• 24 hours

This is a model to illustrate daytime on Earth

using a flashlight to represent the Sun, as shown in the

picture. Why is the model incorrect?

• Earth does not rotate on its axis.

• The Sun does not shine on Earth from that angle.

• The Sun does not shine on only one side of Earth

  at a time.

• Earth does not tilt on its axis.

Earth's seasons is most importantly cause by what?

• the atmosphere

• the distance between Earth and the Moon

• the distance between Earth and the Sun

• the Earth's tilt

Using the table, choose the correct seasons experienced in the Northern and Southern Hemispheres.

• Northern: winter

  Southern: fall

• Northern: fall

  Southern: winter

• Northern: summer

  Southern: winter

• Northern: winter

  Southern: spring