Celestial Bodies & Gravity

A visible streak of light that shows the path of a rocky object which has entered Earth’s atmosphere is–

• a meteor.

• an asteroid.

• a moon.

• a comet.

The composition of the Sun is best described as–

• liquid nitrogen and solid magnesium.

• molten rock, primarily iron.

• dense and composed of hot gases.

• lightweight particles of dust.

Which set of characteristics listed below are unique to the inner planets?

• Gaseous, small

• Cratered, liquid

• Cool, humid

• Terrestrial, rocky

Most of the asteroids in our solar system are located between the orbits of what two objects?

• The Sun and Earth

• Venus and Earth

• Mars and Jupiter

• Uranus and Neptune

Europa, a moon that orbits Jupiter, is quite different from Earth’s Moon. One characteristic it shares with Earth’s Moon is that Europa–

• is covered in ice.

• orbits a planet

• has an oxygen atmosphere.

• contains water.

All the planets in our solar system have more or less the same–

• diameter.

• composition.

• shape.

• mass.

Which of the following diagrams is the most accurate representation of Earth’s relationship with the Sun and the Moon?

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• 
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What celestial body does the picture represent?

• Comet

• Asteroid

• Moon

• Meteor

A moon orbits which celestial object?

• Planet

• Asteroid

• Comet

• Meteor

Which motion does Earth make once every 24 hours?

• Rotates once on its axis

• Makes one orbit of the Sun

• Revolves once around the Moon

• Passes by Mars in its path