The four terrestrial planets are so called because they

are similar in structure to Earth

The moon most likely formed

from a collision with a Mars-sized object

Ocean tides are the result of the

difference in the sun's & moon's gravitational pull on Earth

Asteroids are mainly found

in the asteroid belt beyond Mars

Why does the Earth's moon have no atmosphere?

The moon's gravity is too weak to hold onto gas molecules

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Chapter 25, The Solar System

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The Solar System #science #solarsystem

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Questions 15

Answers

1
Which of the following objects does NOT orbit directly around the sun?
planets
moons
comets
all of the above
2
The four terrestrial planets are so called because they
can all be seen from Earth without a telescope
are similar in structure to Earth
were all once part of Earth
are the nearest planets to Earth
3
The moon most likely formed
from material in the solar system that came together
from a collision with a Mars-sized object
in another region of space & drifted toward Earth
in the same way as Earth was formed
4
On the moon, maria are
rough mountains
meteoroid craters
low, flat plains
lunar seas filled with water
5
Who was the first American in space?
Alan Shepard
Yuri Gargarin
Chuck Yeager
Neil Armstrong
6
Ocean tides are the result of the
sun's gravitational pull on Earth
changes in Earth's orbital position around the sun
difference in the sun's & moon's gravitational pull on Earth
rotation of the Earth
7
Which of the gas giants has the largest diameter?
Uranus
Neptune
Jupiter
Saturn
8
Why're the terrestrial planets small & rocky instead of large & less dense like gas planets?
rock-forming materials can condense at high temperatures
all of the above
ice-forming compounds vaporize at high temperatures
the inner planets were exposed to much higher temperatures
9
Comets are made mostly of
methane
hydrogen & helium
iron
ice & rock
10
According to the nebula theory, the solar system formed from
colliding planetesimals
accretion of protoplanets
all of the above
a large, thin cloud of dust & gas
11
Asteroids are mainly found
throughout the solar system
in orbit around Jupiter
beyond the farthest known planet
in the asteroid belt beyond Mars
12
The orbit of a planet around the sun is a (an)
Parabola
Ellipse
Straight Line
Circle
13
Why does the Earth's moon have no atmosphere?
The moon is too far from Earth
The moon's gravity is too weak to hold onto gas molecules
There are no plants to release oxygen
The average temperature is too high
14
Which of the following is a sparse sphere of comets that surrounds the sun & planets?
none of the above
the Kuiper belt
the Oort belt
the asteroid belt
15
In a diagram depicting the solar system as heliocentric, what is located at the center?
the sun
Earth
the moon
Mars

Chapter 25, The Solar System Flashcards | StudBud