7H UNIT 7

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 shorter at Point X than at Point Y because the Northern Hemisphere is tilted away from the sun.

• The length of daylight is shorter at Point X than at Point Y because the Northern Hemisphere is tilted toward the sun.

• The length of daylight is longer at Point X than at Point Y because the Northern Hemisphere is tilted away from the sun.

• The length of daylight is longer at Point X than at Point Y because the Northern Hemisphere is tilted toward the sun.

Tags

NGSS.MS-ESS1-1

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.

Tags

NGSS.MS-ESS1-1

Earth would not have seasons if it —

• did not rotate on its axis.

• were farther from the Sun.

• had a thicker atmosphere.

• were not tilted on its axis.

Tags

NGSS.MS-ESS1-1

What would happen if Earth were no longer tilted on its axis?

• 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

NGSS.MS-ESS1-1

The beginning of autumn in North America is in September, but the beginning of autumn in South America is in March. 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° tilt.

Tags

NGSS.MS-ESS1-1

Which of the following has the greatest effect on the Earth’s tides?

• The Moon’s gravitational pull

• The Sun’s gravitational pull

• The gravitational pull of Venus

• The gravitational pull of Mars

Tags

NGSS.MS-PS2-4

Students used pictures of the Sun, Earth, and Moon to model positions during tides. Which of the following diagrams best represents a spring tide?

• Diagram A

• Diagram B

Tags

NGSS.MS-ESS1-1

Refer to the diagram above. A neap tide occurs at __________ while a spring tide occurs at __________.

• W and Y
• X and Z
• X and Y

• none

Tags

NGSS.MS-ESS1-1

How are the convection currents in the student’s model different from the convection currents in Earth’s atmosphere and oceans?

• The warm air in Earth’s atmosphere and the warm water in Earth’s oceans sink instead of rise.

• The heat source for Earth’s atmosphere and oceans is the sun, which heats from above instead of below.

• Convection cells in Earth’s atmosphere and oceans flow in the same direction instead of opposite directions.

• Cold air in Earth’s atmosphere and cold water in Earth’s oceans are less dense than warm air and warm water instead of being more dense.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which statement correctly describes the changes in the air as it moves from Location R to Location T?

• The sun heats the land faster than the ocean water, so high-density air moves from the ocean to the land, becoming less dense.

• The sun heats the land faster than the ocean water, so high-density air moves from the land to the ocean, becoming less dense.

• The sun heats the land slower than the ocean water, so high-density air moves from the ocean to the land, becoming less dense.

• The sun heats the land slower than the ocean water, so high-density air moves from the land to the ocean, becoming less dense.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6