SC.8.E.5.2

Two stars have the same apparent magnitude as seen from Earth’s surface. Star A is 33 light-years away. Star B is 346 light-years away. Which of the following claims is supported by the evidence?

• Star B is larger than star A

• Star B is more luminous than star A

• The stars have the same absolute magnitude

• Star A has a smaller absolute magnitude

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)

The sun is made up of six different layers. Three of these layers make up the interior of the sun. The remaining three layers make up the sun’s atmosphere. Which is the innermost layer of the sun?

• chromosphere

• convection zone

• Core

• Corona

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

In which layer of the sun does convection occur?

• core

• chromosphere

• convection zone

• photosphere

Conduction is one way in which energy in the form of heat is transferred through the Earth system. Which of the following best describes how conduction causes magma to heat the surrounding rock inside Earth?

• The warm magma flows towards Earth’s surface and cools.

• Electromagnetic waves from the sun warm the magma, which in turn warms the surrounding rock

• Differences in the density of the magma cause movement in the magma, which warms the surrounding rock

• Molecules of magma collide with molecules of rock and transfer energy as heat