Solar system

Although Mercury is closer to the Sun, why is Venus is hotter?

Select all that apply

• Venus has a dense atmosphere and greenhouse gases that cause it to retain heat energy it receives from

  the Sun.

• Mercury is too small to get very warm.

• Mercury has no atmosphere to hold the heat.

Solar energy trapped by gases in Venus's atmosphere causes ____.

• clouds to form

• its slow rotation

• the greenhouse effect

• a cooling effect

Two of the inner planets are ____.

• Venus and Saturn

• Mars and Venus

• Earth and Neptune

• Mercury and Jupiter

____ is the third planet from the Sun.

• Mercury

• Venus

• Earth

• Mars

The order of the inner planets outward from the Sun is ____.

• Mercury, Earth, Venus, and Mars

• Mercury, Venus, Earth, and Mars

• Mars, Venus, Earth, and Mercury

• Earth, Venus, Mars, and Mercury

____ is the largest planet in the solar system, is the fifth planet from the Sun, and has colorful clouds.

• Jupiter

• Saturn

• Uranus

• Neptune

Which of the following objects are larger than the dwarf planets?

• Mercury

• Earth

• Earth's moon

• All of the above

Mercury is the ____ planet from the Sun.

• fourth

• third

• second

• first

What is the basic shape of every planet’s orbit?

• circle

• ellipse

• square

• egg

Small pieces of rock that enter Earth's atmosphere and burn up are called ____.

• stars

• meteors

• meteorites

• asteroids