Unit 1 - Astronomy Test

Front

Which of the following characteristics distinguishes jovian planets (gas giants) from terrestrial planets? A. They have solid surfaces, B. They are smaller in size, C. They have thicker atmospheres composed primarily of hydrogen and helium, D. They are located closer to the Sun

Back

They have thicker atmospheres composed primarily of hydrogen and helium.

Front

Why is the nebular hypothesis important in understanding the formation of our solar system?

Back

It provides a framework for understanding the formation of planets and the Sun.

Front

Arrange the following steps in the correct sequence according to the nebular theory of solar system formation: I. Formation of a protostar from gravitational collapse. II. Condensation of solid particles in the protoplanetary disk. III. Formation of planetesimals through accretion. IV. Formation of a protoplanetary disk from a rotating nebula.

Back

I, IV, II, III

Front

Which of the following groups correctly classifies the planets in the solar system according to their size and location? A. Terrestrial planets: Mercury, Venus, Earth, Mars; Jovian planets: Jupiter, Saturn, Uranus, Neptune B. Terrestrial planets: Jupiter, Saturn, Uranus, Neptune; Jovian planets: Mercury, Venus, Earth, Mars C. Terrestrial planets: Jupiter, Saturn, Uranus, Neptune; Jovian planets: Mercury, Venus, Earth, Mars D. Terrestrial planets: Mercury, Venus, Earth, Mars; Jovian planets: Uranus, Neptune, Jupiter, Saturn

Back

Terrestrial planets: Mercury, Venus, Earth, Mars; Jovian planets: Jupiter, Saturn, Uranus, Neptune

Front

What role does gravity primarily play in the formation of astronomical objects such as stars and planets?

Back

It causes the collapse of gas and dust clouds.

Front

Compared to the distance between Earth and Mars, the distance between Jupiter and Saturn is ______.

Back

much larger

Front

Which natural phenomenon occurs as a result of Earth rotating on its axis?

Back

Day and night

Front

How does the tilt of Earth’s axis affect the season?

Back

By changing the amount of direct solar energy reaching the surface of Earth.

Front

Which statement describes the motion of Earth around the sun? Options: A. The speed of Earth is constant regardless of its distance from the sun., B. Speed increases the closer Earth is to the sun and decreases the farther it is from the sun, C. The speed of Earth is constant because the distance remains the same between earth and the sun, D. Speed increases the farther Earth is from the sun and decreases the closer it is to the sun

Back

Speed increases the closer Earth is to the sun and decreases the farther it is from the sun.

Front

According to the Tides Chart below which best describes the pattern of tides shown?

Back

Two high tides and two low tides each day.