Gravity CFU

Earth would not have seasons if it -

• no longer tilted on its axis

• stopped rotating on its axis

• took an additional month to orbit the sun

• revolved around the sun in the opposite direction

Tags

6.9A

Seasons

TEKS

Texas

Science

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

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Tags

6.9A

Seasons

TEKS

Texas

Science

A student wants to use a spinning basketball to model the day-and-night cycle on Earth.

What should the student do in order to best model the cause of the day-and-night cycle?

• Spin the ball in different directions

• Tilt the ball while it is spinning

• Paint one half of the ball black and the other half white.

• Shine a bright light on one side of the ball

Tags

6.9A

Seasons

TEKS

Texas

Science

In which position is it winter in North America?

• Position 1, because North America receives the most direct sun

• Position 2, because North America is tilted toward the sun

• Position 3, because North America is parallel to the sun

• Position 4, because North America is tilted away from the sun

Tags

6.9A

Seasons

TEKS

Texas

Science

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

• Earth's orbit around the sun is not a perfect circle.

• North America has a larger landmass than South America.

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

• Earth's axis has a 23.5 degree tilt.

Tags

6.9A

Seasons

TEKS

Texas

Science

Which diagram models a hypothetical situation in which every location on Earth would have 12 hours of daylight and 12 hours of darkness per day?

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Tags

6.9A

Seasons

TEKS

Texas

Science

Which answer choice best explains the change from daytime to nighttime on Earth?

• The sun stops sending light to Earth at night.

• Earth moves farther away from the sun at night.

• The tilt of Earth causes less light to reach Earth at night.

• Earth rotates and causes different parts of Earth to experience night.

Tags

6.9A

Seasons

TEKS

Texas

Science

Which statement is 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.

• Spring begins earlier in the year in the Southern Hemisphere than it does in the Northern Hemisphere.

Tags

6.9A

Seasons

TEKS

Texas

Science

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 in its orbit

Tags

6.9A

Seasons

TEKS

Texas

Science