Answers2001310 Earth Science Sem 1 - PearsonSpace Technology

Space Technology — Unit test Answers

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Which statement accurately describes a light-year?

A
It is the shape of a galaxy.
B
It is the distance that light travels in a year.
C
It is a yearly measurement of light given off by stars.
D
It is the amount of time it takes light to travel one million kilometers.
2
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What can be observed only by observing its effects on gravity?

A
dark matter
B
a solar nebula
C
gas and dust
D
a planetesimal
3

According to the big bang theory, which statement is accurate about how the universe came to be?

A
It expanded slowly.
B
It gradually warmed.
C
Stars and galaxies formed.
D
Atoms such as hydrogen were destroyed.
4

How was Aristotle’s model similar to Ptolemy’s model?

A
Both models stated that the planets rotate on their axes.
B
Both models stated that Earth is the center of the system around which other objects orbit.
C
Both models stated that the planets and objects in the solar system have small orbits called epicycles.
D
Both models stated that the Sun is the center of the system around which objects have elliptical orbits.
5

Which technology can observe electromagnetic radiation and avoid light pollution to allow for exploration beyond our solar system?

A
space probe
B
space station
C
space shuttle
D
space observatory
6

Which planet revolves slowly around the Sun, has rings, and is known for its Great Red Spot?

A
Jupiter
B
Mars
C
Neptune
D
Saturn
7

Which two characteristics are used to classify stars on the Hertzsprung-Russell diagram?

A
size and density
B
density and composition
C
composition and temperature
D
temperature and absolute brightness
8

In what way has technology used aboard the International Space Station benefited humans back on Earth?

A
Robotic arms used aboard the ISS are now used in delicate surgeries on Earth.
B
Air purifiers developed for the ISS now provide cleaner air for humans on Earth.
C
Software created for the ISS was adapted and is now used to conduct brain surgery on Earth.
D
Research conducted on the ISS crew about heart disease is now used to help patients on Earth.
9

How is the moon illuminated?

A
It produces its own light.
B
It reflects light from the Sun.
C
It transforms energy into light.
D
It absorbs light from the Earth.
10

Which characteristic is common to all inner planets?

A
rings
B
moons
C
rocky surfaces
D
slow revolutions
11

What occurs when the moon blocks the view of the Sun?

A
neap tide
B
spring tide
C
solar eclipse
D
lunar eclipse
12

How did Galileo increase public support for Copernicus’s model?

A
by publishing his work in Italian
B
by using data collected by Tycho Brahe
C
by explaining why planets appear to move backward
D
by arguing that Earth’s rotation makes objects appear to move in the sky
13

What will a medium-mass star become at the very end of its life cycle?

A
a red giant
B
a black hole
C
a black dwarf
D
a neutron star
14

Look at the diagram of the moon and three different paths that it could take.

Question illustration
A
the path of the moon toward the Sun
B
the path of the moon’s orbit around Earth
C
the path the moon would take if it had a larger mass than the Sun
D
the path the moon would take if there was no force of Earth’s gravity
15

At which location would an object’s weight be the greatest?

A
on Pluto
B
on Earth
C
on the Sun
D
on the moon
16

Which type of star system has the most stars?

A
open cluster
B
globular cluster
C
eclipsing binary
D
binary star system
17

Which statement explains how planets move in orbit as supported by Newton’s first law of motion?

A
Planets can change the direction of their own orbital path.
B
Planets can change orbits due to their inertia.
C
Planets in motion will have a constant speed unless acted on by an outside force.
D
Planets with a greater mass will orbit more quickly than smaller planets.
18

What was the purpose of the Apollo program?

A
to put a man in orbit
B
to launch a spy satellite
C
to launch a space station
D
to put man on the moon
19

When two objects are near each other, how would increasing one object’s mass affect it?

A
The shape of the object would change.
B
The weight of the object would decrease.
C
The gravitational force of the object would increase.
D
The mass of the object would be stronger than gravity.
20

Which event occurs during high tide?

A
All of Earth’s ocean levels rise.
B
The moon’s orbit is closer to Earth.
C
The gravity of the Sun and moon cause the Earth’s crust and water to bulge.
D
Earth’s crust and water are being pulled in opposite directions by the Sun and moon.

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Space Technology — Unit test Answers — 2001310…