Stars Study Guide

How does the distance of the Sun from Earth affect its brightness?

• The brightness of the Sun is always the same.

• The Sun is brighter the further it is from Earth.

• The Sun is brighter the closer it is to Earth.

• The Sun is dimmer the closer it is to Earth.

The Earth's Sun is a _________.

• comet

• planet

• asteroid

• star

What does a star chart show you?

• the stars are moving

• the age of the stars

• the patterns of the stars

• the distance of the stars

What tool do astronomers use to view a stars brightness in a constellation?

• telescope

• microscope

• star chart

• binoculars

Why does the Sun appear brighter than other stars?

• Because it is hotter

• Because it is larger

• Because it is older

• Because it is closer

Markab is a star that is visible in the northern hemisphere from the end of the summer through fall. Which of the following best explains why this constellation is not visible throughout the entire year?

• The Sun's movement across the sky

• Earth's movement on its orbital path

• The moons revolution around Earth

• The Earth's rotation on its axis

Tags

NGSS.MS-ESS1-1

Why are constellations not seen in the same place in the sky all year around?

• Moons phases

• Earth's tilt

• Earth's revolution and rotation

• The are seen in the same place all year around

Stars ________ Earth appear brighter.

• further from

• closer to

One of the closest stars to Earth is Alpha Centauri A. It is larger than the Sun, yet it appears much less bright. Which of the following is the best explanation for this?

• Dust in the Earth’s atmosphere absorbs the light of all the stars we see.

• As stars get older, the amount of light they give off decreases.

• The difference in brightness is due to the difference in relative distance.

• The smaller a star is, the more concentrated its energy is, so it appears brighter.

How many of the stars, visible in the night sky, are closer to Earth than the Sun?

• All of them

• Half of them

• None of them

• Only one