Solar System Part 1 Unit Test Review

Stars appear as small points of light in the sky because...

• they are so much further away than the Sun.

• they are so much smaller than the Sun.

• their light is lessened by our atmosphere.

• they are so much dimmer than the Sun.

Briar goes outside and notices that the sun looks larger than the other stars he has seen. Why does the sun appear larger than the other stars?

• The Sun looks larger because of the rotation of the Earth.

• The Sun appears to be the largest star because it gives off the most light.

• The Sun is the largest star in the sky.

• The Sun looks larger because it is closer to Earth than any other star.

Cherish’s teacher asked her to make a poster about the Sun. She wants to tell why the Sun appears brighter than other stars in Earth’s sky. What should Cherish write on her poster?

• The Sun is closer than other stars.

• The Sun is bigger than other stars.

• The Sun is hotter than other stars.

• The Sun is rounder than other stars.

The planet that is the closest to the Sun in our solar system is...

• Venus

• Earth

• Mercury

• Mars

This planet is often called the red planet. It is one of the closest planets to Earth. People wonder if there is life on this planet. Which planet is described?

• Neptune

• Venus

• Mars

• Saturn

The Earth belongs to the group of rocky planets that orbits between the Sun and the asteroid belt. Place these planets in order, starting closest to the Sun.

• Mercury-Venus-Earth-Saturn

• Mercury-Earth-Venus-Mars

• Venus-Mars-Earth-Jupiter

• Mercury-Venus-Earth-Mars

Look at this image. It is the planet Uranus, and it is surrounded by millions of stars. How can you tell the difference between a planet and a star?

• A star is bigger than a planet.

• A star produces its own light.

• A star rotates around a planet.

• A star does not produce its own light.

This telescope was carried into space in 1990 by the Space Shuttle. It is still operating today and it produces the most detailed visible-light images ever made of very distant objects in our universe. This is the ___________.​ ​

• Columbia Space Telescope

• manned space station

• space shuttle Atlantis

• Hubble Space Telescope

While looking at the stars one night, Layla and Dannica notice one that is extremely bright, and also much redder than the other stars. Layla thinks it is a star that gives off red light, while Dannica thinks that it may be the planet Mars. What scientific tool could they use to examine the distant object and sort out their argument?

• A microscope.

• A stethoscope.

• A telescope.

• A monocle.

Planets are much _________ than stars.

• hotter

• smaller

• farther away from Earth

• bigger