Space Lesson 5: Earth

In the diagram below, the South Hemisphere is tilted toward the sun. Which statement is true about the solar energy received when the South Hemisphere is tilted toward from the sun?

• The Southern Hemisphere receives less direct solar energy and is cooler.
• The Southern Hemisphere receives less direct solar energy and is warmer.
• The Southern Hemisphere receives more direct solar energy and is cooler.
• The Southern Hemisphere receives more direct solar energy and is warmer.

A region on Earth’s surface always has the highest temperatures in June and the lowest temperatures in December. Which of these statements explains why the temperatures are lowest in December?

• This region is tilted the most toward the sun in December
• This region is the nearest distance from the sun in December
• This region is the farthest distance from the sun in December
• This region is tilted the farthest away from the sun in December

In the picture of Earth below, the United States is in the center. As Earth rotates, the position of the United States in this picture moves. How often would the United States be in the same position in this picture again?

• about every 12 hours
• about every 24 hours
• about every 1 month
• about every 1 year

What two factors impact the length of a season?

• Earth’s rotational speed and Earth’s position in its orbit around the sun
• Earth’s tilt relative to the moon and Earth’s rotational speed
• Earth’s tilt relative to the sun and Earth’s position in its orbit around the sun
• Earth’s tilt relative to the sun only

Chang drew the diagram below to show that Earth’s axis of rotation is not perpendicular, but tilted. Which of the following does the tilt of the axis of rotation best explain?

• why Earth has tides
• how long an Earth day is
• how long an Earth year is
• why Earth has seasons

The part of Earth that is tilted toward the sun changes throughout the year, as shown in the diagram below. In which position is Earth when the Northern Hemisphere is experiencing winter?

• Position A
• Position B
• Position C
• Position D

Which of these choices best describes the picture shown below.

• Rotation-the spin of Moon on its axis as it moves forward
• Rotation-the spin of Earth on its axis as it moves forward
• Orbit-the spin of Earth on its axis as it moves forward
• Orbit- the path Earth travels as it revolves around the sun