Earth Space Exam Review

Earth Space Exam Review

GRADED A+ (ACTUAL EXAM ) Questions and Answers (Solved)

• Occurs when the Moon passes directly between the Sun and Earth and

casts a shadow over part of Earth

Answer: solar eclipse

• an eclipse in which the moon appears darkened as it passes into the

earth's shadow.

Answer: lunar eclipse

• the average distance between the earth and the sun; useful for

measuring distances within the solar system

Answer: astronomical unit (AU)

• the distance light travels in one year; useful for measuring distances

outside the solar system

Answer: light-year

• As a planet moves around its orbit, it sweeps out equal areas in equal

times; this results in a planet's speed changing during its orbit

Answer: Kepler's Second Law of Planetary Motion

• According to Kepler's 2nd law, does a planet move faster or slower

when it's closer to the sun?

Answer: faster

• Two objects attract each other with a force that is directly proportional

to the mass of each object and inversely proportional to the square of the distance between them.Answer: Newton's Law of Universal Gravitation 1 / 2

• Small, rocky planets that orbit closest to the sun including Mercury,

Venus, Earth, & Mars

Answer: inner planets

• large, gaseous planets that orbit the furthest from the sun including

Jupiter, Saturn, Uranus, and Neptune

Answer: outer planets

• An object that orbits the sun and is spherical, but has not cleared

smaller bodies from the area of its orbit.

Answer: dwarf planet

• color of the hottest stars

Answer: blue

• color of the coolest stars

Answer: red

• a graph relating the surface temperatures and absolute brightness of

stars

Answer: Hertzsprung-Russell diagram

• An object in space whose gravity is so strong not even light can

escape; formed by the death of extremely high mass stars

Answer: black hole

• A small, hot, dim star that is the leftover center of an old low or

medium mass star

Answer: white dwarf

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