AnswersAZ-Earth and Space Science A SC301Space Technology

Space Technology — Unit test Answers

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1
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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 occurs when the moon blocks the view of the Sun?

A
neap tide
B
spring tide
C
solar eclipse
D
lunar eclipse
3

What is a nebula?

A
the core of a massive star
B
a cloud of gas and dust in space
C
a swirling disk with a lot of gravity
D
the debris remaining after a supernova
4

How does increasing frequency affect the crests of a wave?

A
They get higher.
B
They get closer together.
C
They get lower.
D
They get farther apart.
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 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.
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

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.
11

Which has been observed in the study of embryology?

A
Species whose embryos have similar traits rarely have a common ancestor.
B
Species whose embryos have similar traits always have similar body forms as adults.
C
All traits present in early embryos remain throughout development.
D
Some traits in certain embryos disappear as the embryo develops.
12

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
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

Which type of galaxy has arms that contain sites of active star formation and start close to a bulge in the center?

A
elliptical
B
irregular
C
barred spiral
D
normal spiral
16

Which type of star system has the most stars?

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

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
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

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
20

Which characteristic is common to all inner planets?

A
rings
B
moons
C
rocky surfaces
D
slow revolutions

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