astronomy

astronomy

Multiple Choice Celestial Object Problem and Answer Key - Astronomical object Astronomical objects (celestial bodies) are physical entities, associations, or natural structures that exist in the observable universe. In astronomy, the terms object and body are often used interchangeably.

Appearance of Objects in the Sky

Planets are celestial bodies that orbit or circle a star.

Stars are celestial bodies that emit reflected light from other objects.

Asteroids are celestial bodies that are small in size and do not include planets and larger meteorids.

Comet

Meteor

Galaxy

Sun

Multiple Choice

1. A planet that has oxygen gas as well as a habitable planet is ...

• Mars

• Mercury

• Earth

• Jupiter

Discussion

In fact Earth is not the only place in the Solar System that has oxygen. Rhea, the satellite of the Planet Saturn, is rich in oxygen. Saturn is the second largest planet in the Milky Way Galaxy, after Jupiter. This gas planet has 62 moons, with Titan as the largest satellite.

Multiple Choice

2. The celestial bodies that limit the inner and outer planets are

• Satellite

• Meteoroid

• Asteroids

• Planet

Discussion

In fact Earth is not the only place in the Solar System that has oxygen. Rhea, the satellite of the Planet Saturn, is rich in oxygen. Saturn is the second largest planet in the Milky Way Galaxy, after Jupiter. This gas planet has 62 moons, with Titan as the largest satellite.

Multiple Choice

3. Phobos and Deimos are satellites of planets ...

• Mercury

• Jupiter

• Saturn

• Mars

Discussion

The two satellites were discovered in 1877 by Asaph Hall, they are named after the characters Phobos (panic / fear) and Deimos (terror), who in Greek Mythology, accompanied their father Ares, the god of war, to war. Ares was known as Mars in Ancient Roman civilization.

Multiple Choice

4. The moon is not a star because….

• The shape is round

• Near from the earth

• Does not have its own light

• Not seen continuously

Discussion

The moon is not a star because the moon reflects light from the sun and does not have its own light.

A celestial body is categorized as a star when the celestial body emits its own light, while the moon does not emit light but reflects the sun's light.

Multiple Choice

5. The change in position between the sun, moon, and earth causes the shape of the moon to become….

• Looks fickle

• Looks the same

• Looks bright

• Looks beautiful

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