Solar System

Brandi made a drawing showing the planets in our solar system. How are the four outer planets different from the four inner planets?

• They are smaller
• They all have moons
• They have no atmosphere
• They take less time to orbit the sun

Heather wanted to draw the objects in our solar system. She drew our moon and the Sun. What are some other objects in the solar system that Heather needs to include in the drawing?

• Comets and Stars
• Stars and galaxies
• Meteoroids and galaxies
• planets and asteoroids

Fran is making a model of the solar system. Which of these solar system objects in her model should be shown in orbit around a planet?

• Asteroid

• Moon

• Comet

• Galaxies

Sally made a two-column chart to compare comets and asteroids. Which of these properties is true of both comets and asteroids?

• larger than most planets
• orbits the sun
• made of gas, ice, and dust
• has moons around it

Bob created a model to show the solar system. Why is Bob's activity NOT an experiment?

• it is not showing a science concept
• there are no controls or variables
• no observations are being made
• it is not repeatable

Some planets are larger than others. Which planet is closest in size to Earth?

• Mars
• Mercury
• Neptune
• Venus

Our universe contains many galaxies. What is found in a galaxy?

• stars, but not planets
• planets, but not stars
• stars, planets, gas, and dust
• planets and moons only

During a trip to a planetarium, Brian learned that the inner planets are Mercury, Venus, Earth, and Mars. Which statement describes the four inner planets?

• They have moons
• They have clouds
• They are small and rocky
• They are made mostly of gas

Planets are ordered at different distances from the Sun. Which two planets are closer to the Sun than Earth is?

• Mars and Jupiter
• Saturn and Neptune
• Venus and Jupiter
• Mercury and Venus

Susie went out at night with binoculars and saw thousands of stars. Where are all of these stars located?

• in the Milky Way
• in a different galaxy
• in the solar system
• in the atmosphere