Solar System

During January, Jupiter will suddenly become visible in the western sky.  Why isn't it visible all year?

• because Earth rotates
• because Jupiter is a star, and stars change their positions in the sky
• because Jupiter moves across the sky from left to right
• because Jupiter and Earth revolve around the sun at different rates

Which statement BEST explains why the sun appears to rise in the east and set in the west?

• Earth orbits the sun.
• Earth rotates on its axis.
• The moon orbits Earth.
• The sun orbits Earth.

Which of the following about star color is true?

• The oldest stars are blue.
• The hottest stars are blue.
• The newest stars are yellow.
• The hottest stars are red.

What is the correct order of the inner planets?

• Jupiter, Saturn, Uranus, Neptune
• Mercury, Venus, Earth, Mars
• Mercury, Earth, Venus, Mars
• Jupiter, Mars, Uranus, Neptune

Which of the following is one way technology is used to observe the night sky?

• using a spacecraft to observe the outer planets
• using binoculars to look at a bug
• using a microscope to observe stars
• sing a flashlight to look at the stars

What separates the inner planets from the outer planets?

• meteor shower
• Earth
• asteroid belt
• comets

You are holding a model of Earth and the sun.  You rotate the model of Earth once on its axis.  This represents one...

• minute
• month
• day
• year

A star's color tells us about its ___.

• size
• rotation
• distance from Earth
• temperature

Which statement about planets is true?

• The outer planets are solid.
• Pluto is no longer classified as a planet.
• Earth is an outer planet.
• The inner planets are made of gases.

Summer days in the northern hemisphere are hotter than winter days, because in summer ____.

• Earth's northern hemisphere is tilted toward the sun.
• Earth is closer to the sun.
• the sun gets hotter.
• the sun gives off more energy.