6.9A

The diagram shows Earth in its orbit around the sun when very little light is visible at Earth's South Pole.

Which TWO statements are true when Earth is in the position shown?

• It is August in the Northern Hemisphere.

• It is April in the Southern Hemisphere.

• It is summer in the Northern Hemisphere.

• It is winter in the Southern Hemisphere.

• The number of hours of daylight is greater in the Southern Hemisphere than in the Northern Hemisphere.

The model shows Earth in four different positions in its orbit around the sun.

 

Which statement correctly explains which position of Earth represents summer in the United States?

• Position 1, because the Western Hemisphere is facing the sun

• Position 2, because the Northern Hemisphere tilts toward the sun

• Position 3, because Earth is at its closest point to the sun in its orbit

• Position 4, because Earth is traveling at its fastest rate in its orbit

The beginning of autumn in North America is in September, but the beginning of autumn in South America is in March. The diagram shows the positions of Earth, the moon, and the sun on one day in September and one day in March.

Why does autumn start in different months of the year in North America and South America?

• The distance from the sun changes the start of autumn in different regions.
• North America has a larger landmass than South America.

• The moon has a greater pull on South America than on North America.

• Autumn starts in different months due to varying temperatures.
• Earth’s axis has a 23.5° tilt.

In the summer many people enjoy going to the beach. The photograph shows a beach in Argentina, which is located in the Southern Hemisphere.

Which diagram shows the position of Earth when it is summer in Argentina?

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In the diagram, what portion of the Earth is experiencing summer?

• The Northern Hemisphere

• The Southern Hemisphere

• The Equator

• No portion of the Earth is experiencing summer in this diagram

Which of the following most accurately explains why summers on Earth tend to be hotter than winters?

• The tilt of the Earth's axis causes more direct sunlight during summer.
• The Earth's atmosphere traps more heat in winter.
• Summer has more cloudy days than winter.
• In summer, the Earth rotates slower than in winter.
• The Earth's distance from the sun is shorter in summer.

In the diagram, Earth is shown in four different locations in its orbit around the Sun.  In which position will the northern hemisphere be experiencing winter? 

Earth would not have seasons if it —

• rotated on its side
• had no atmosphere
• had no axial tilt
• was closer to the sun
• had a circular orbit

The model shows the position of Earth in its orbit around the sun and two points on Earth. Which statement correctly compares and explains the length of daylight at the two points?

The length of daylight is ​ (a)   at Point X than at Point Y because the Northern Hemisphere is tilted ​ (b)   from the sun.

• shorter
• away
• longer
• towards

Which diagram shows the relative position of Earth's axis at the beginning of summer in Texas?

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