Unit #5: The Universe & Solar System

Which region in the electromagnetic spectrum would visible light most likely be found?

• Region W

• Region X

• Region Y

• Region Z

____ are loops of gas on the sun that link different parts of sunspot regions together.

• Prominences

• Solar flares

• Solar winds

• Auroras

What is used in determining the apparent magnitude of a star?

• the constellation the star is in

• the distance the star is from Earth

• the number of times the star rotates

• the number of prominences the star makes

Which two factors determine the absolute brightness of a star?

• color and mass

• density and color

• size and temperature

• temperature and density

Why the stars are different colors?

• The stars are in different galaxies.

• The stars have planets orbiting them.

• The stars are different distances away.

• The stars are at different temperatures.

When an astronaut goes from the surface of the Earth to the surface of the Moon, what would be true?

• The astronaut's mass will change.

• The astronaut's weight will change.

• The astronaut's weight and mass will change.

• The astronaut's weight and mass will not change.

Which of the following statements best explains why the comet travels more quickly as it gets closer to the Sun?

• The mass of the comet increases.

• The temperature of the comet increases.

• The frictional force on the comet increases.

• The gravitational pull on the comet increases.

Which point on the chart best represents the size of the Sun?

• Point W

• Point X

• Point Y

• Point Z

Light travels at the speed of 300,000 kilometers per second. Which of these would light take the longest time to cross?

• a galaxy

• a asteriod

• a planet

• a star

What is the standardized and convenient unit to use for measuring distances across the Solar System?

• the distance from the Sun to Earth (AU)

• the distance light travels in one year (light year)

• the distance Mercury travels in one year

• the distance Earth travels around the Sun