The Earth, the Moon, and the Stars

Because of Earth’s rotation, stars in the night sky seem to

• vibrate in place

• grow bigger through the night

• disappear once per week

• move in an arc

Some stars that can be seen from Earth in summer are different from those than can be seen in winter because of

• Earth’s rotation.

• Earth’s orbit around the sun. 

• the moon’s orbit around Earth.

• the stars’ moving behind the sun every winter.

Tags

NGSS.MS-ESS1-1

What causes day and night?

• Earth moves closer to and farther away from the sun.

• Earth rotates on its axis.

• The sun's light gets brighter and darker in a pattern.

• The moon moves into and out of the sun's light.

Tags

NGSS.MS-ESS1-1

At what time of day is the shadow length the shortest?

•  5 PM

• 12 PM 

• 11 AM

• 1 PM

Describe the pattern in shadow length throughout the day.

•  The shadow starts out short, but then it gets shorter and shorter until noon. At noon it is the shortest, but it gets taller and taller until 5 P.M.

• The shadow starts out tall, but then it gets taller and taller until noon. At noon it is the tallest, and it gets taller and taller until 5 P.M.

• The shadow starts out tall, but then it gets shorter and shorter until noon. At noon it is the shortest, but it gets taller and taller until 5 P.M.

• The shadow starts out tall, but then it gets shorter and shorter until noon. At noon it is the shortest, and it gets shorter and shorter until 5 P.M

Tags

NGSS.MS-ESS1-1

Which star would appear brightest if they were all at the same distance from Earth?

• Star A

• Star B

• Star C

The brightest star in the image is not actually the star that appears brightest from Earth. Why?

• The sun is obviously the biggest and brightest star in the universe.

• The stars are different distances from Earth. The farther a star is from earth, the dimmer it appears because less of their light reaches Earth.

• Blue stars are the brightest and none of these stars are blue

• The biggest stars are always the brightest stars.

Tags

NGSS.MS-ESS1-3

How does temperature affect the apparent brightness of a star?

• Cooler stars are brighter than hotter stars.

• Red stars are brighter than blue stars.

• Hotter stars are brighter than cooler stars.

• The sun is the brightest star in the sky.

Which star would appear the brightest?

• A star that is closest to Earth

• A star that is far away from Earth

• A star that is far away from all other stars

• All stars have the same apparent brightness

Based on temperatures shown in the graph, which three stars have the greatest apparent brightness?

• Eta Carinae, the Sun, and Betelgeuse

• Eta Carinae, Rigel, and Sirius

• Gamma Virginis, Sirius, and Arcturus

• the Sun, Arcturus, and Betelgeuse