Solar System

Stars are different colors because

• some are closer to Earth than others.
• some are bigger than others.
• some have different temperatures than others.
• the color depends on their solar system.

Which of the following is one way stars are different from moons? 

• Stars move around planets
• Stars are smaller than moons
• Stars are smaller than moons
• Stars produce heat and light

Why do stars appear to move across the sky every night? 

• Earth is rotating
• The Sun is spinning
• The Sun is rotating around the stars. 
• The stars are rotating around Earth

Most planets in our solar system have at least one natural satellite, or ____________. 

• star
• asteroid
• crater
• moon

Earth is the only planet in our solar system with large amounts of

• sunlight and rock
• oxygen and water.
• nitrogen and ammonia
• helium and methane

Which of the following is NOT true? 

• In the night sky, there are more planets visible than stars.
• Stars have a hotter surface temperature than planets
• Stars and planets can be made from gases.
  
• Planets reflect light from the sun, but stars make their own light.
  

The pattern of stars in a constellation stays the same because... 

• the stars orbit the sun
• the stars do not move across the sky nightly
• the stars move very fast
• the stars go in different directions during the day but come back together at night

Why can planets be seen in different locations at different times?

•  because the Sun moves around the planets
• because telescopes are located in different places
• because of the different months of the year
• because planets move in an orbit around the Sun

The positions of some constellations appear to change with the seasons because ___________________

•  Earth revolves around the Sun 
• stars orbit the Sun 
• Earth rotates on its axis 
•  constellations orbit the Sun 

Telescopes are not the only technology used to study distant stars and planets.  Scientists also use _____________.  They are vehicles that carry cameras, instruments, and other tools. 

• rockets
• radios
• cars
• space probes