SC 6 E 7 3

The sun is much larger than the moon. However, as viewed from Earth, the sun and moon appear to be the same size. Which reasoning explains why the sun and moon appear to be the same size when viewed from Earth?

• The moon is much hotter than the sun

• The moon is much denser than the sun

• The moon is much brighter than the sun

• The moon is much closer to Earth than the sun

Tags

NGSS.MS-ESS1-1

An astronomer observes that the color of a star is similar to the color of the sun. Therefore, she infers that the star and the sun have similar sizes and surface temperatures. Using this information, what can the astronomer conclude about the star?

• The star s a white dwarf

• The star is medium sized

• The star is hotter than most other stars in our galaxy

• The star is brighter than most other stars in our galaxy

Which star should Ashley label as the hottest?

• Wolf (red)

• Ceti (yellow)

• Cygni B (orange)

• Vega (blue-white)

Luis is comparing two stars in the Milky Way galaxy. How can Luis tell which star has the greater temperature?

• brightness

• apparent magnitude

• color

• absolute magnitude

The Sun does not have the greatest absolute brightness compared to stars in the night sky. How is it possible that it has the greatest apparent brightness?

• It is hotter than the other starts.

• It is closer than the other stars.

• It is farther away than the other stars.

• Apparent brightness is more powerful than absolute brightness.

Which of the following can affect our communications grid?

• sunspots

• revolution of planets

• phases of the moon

• apparent magnitude

What is unique about the rotation of the sun?

• It spins way faster than the planets.

• It spins extremely slow.

• The top half spins one direction and the bottom half spins the opposite direction.

• Some areas spin faster than others.

In which layer of the sun does nuclear fusion take place?

• Core

• Radiative zone

• Chromosphere

• Corona

Tags

NGSS.HS-ESS1-1

Sovann drew this model of the water cycle. Phase A in Sovann’s water cycle occurs over the ocean.

Which part of the water cycle is Phase A?

• condensation

• evaporation

• preipitation

• runoff

Tags

NGSS.MS-ESS2-4

Justin and Angela are conducting an experiment to see ways different sources of water contribute to the water cycle. They evaporate water from the Atlantic Ocean and rainwater. They use the same amount of each and do the experiment under the same conditions. What will they observe?

• The salt water evaporates slower

• The rainwater does not evaporate

• Salt is left behind from both samples.

• Salt is left behind from the ocean sample

Tags

NGSS.MS-ESS2-4