Openscied Earth in Space

This diagram illustrates Earth’s orbit.



What is not illustrated in this diagram?

• The Lunar Cycle
• The day/night Cycle
• The seasonal changes
• Earth's rotation and revolution 

Besides Earth's tilt, what other factor determines the hours of sunlight per day in a particular area?

• Temperature
• Latitude
• Longitude
• The speed of light 

Which of the following best explains why the seasons change as Earth revolves around the Sun? 

• Earth’s axis is tilted, so different parts of the planet receive more sunlight at different stages in Earth’s orbit.
• Earth is constantly rotating on its axis, exposing different parts of the planet to the Sun at different times.
• Earth’s orbit is elliptical rather than circular.
• At some points in its orbit, Earth is closer to the Sun than at other times.

The diagram shows the orbit of Earth around the Sun. At point Z people who live nearest the North Pole experience 24 hours of daylight. What causes this to happen?

• Earth's rotation
• Earth's revolution
• Earth's equator
• Earth's tilt on its axis 

Which of the following is not a factor that is responsible for the changes in seasons that occur on Earth?

• Earth’s tilt on its axis
• Earth’s rotation
• Earth’s revolution
• Earth’s orbit

How does Earth tilt when Texas has summer?

• The Northern Hemisphere tilts away from the sun.
• The Northern Hemisphere tilts toward the sun.
• The Southern Hemisphere tilts toward the sun.
• The Southern Hemisphere tilts the same way as the Northern Hemisphere.

Look at the map. Which entire continent lies roughly between latitude 15° south and 45° south?

• Cape of Good Hope
• South America
• Australia
• Indian Ocean 

The diagram shows the orbit of Earth around the Sun. At what point in the diagram is the Northern Hemisphere experiencing winter?

• W
• X
• Y
• Z

When does Earth's tilt allow for the least amount of solar energy to reach Texas?

• summer solstice
• fall equinox
• winter solstice
• spring equinox

Look at the diagram of Earth orbiting the Sun. At position A, which part of Earth is experiencing summer?

• Southern Hemisphere
• North Pole
• Northern Hemisphere
• Equator