AnswersAZ-Earth and Space Science A SC301Space Technology

Space Technology — Unit test Answers

2 verified answers
1
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Which statement correctly describes terrestrial planets?

A
They are made of mostly rock.
B
They are made of gases.
C
They are small objects of ice and dust.
D
They are very large compared to other planets.
2
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Which is a future NASA research project?

A
using a probe to collect data
B
conducting research from a space station
C
collecting samples on an asteroid
D
conducting a space mission with no people
3

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?

A
Venus has phases.
B
The orbits of the planets are elliptical
C
Earth’s rotation causes the Sun to rise in the sky.
D
The planets move faster when they orbit closer to the Sun.
4

Astronomers want to study a star in the Andromeda galaxy, the closest galaxy to our own.Which instrument has the advanced technology needed to study such a far-off object?

A
rover
B
telescope
C
satellite
D
orbiter
5

Which phrase describes a population?

A
a group of different communities in an area
B
organisms of the same species living in an area
C
nonliving things that interact with living things in a region
D
organisms that belong to the same community within a region
6

The diagram shows a model of a transverse wave.

Question illustration
A
90 m/s
B
120 m/s
C
240 m/s
D
360 m/s
7

Which tools are currently used to collect images during space exploration?

A
rovers and satellites
B
satellites and rockets
C
rockets and space shuttles
D
space shuttles and rovers
8

Which quantity does a light-year measure?

A
distance
B
speed
C
time
D
volume
9

Solar winds have an influence all the way to about 160 AU from the Sun. About how many kilometers is that?

A
24,000,000,000 km
B
48,000,000,000 km
C
240,000,000,000 km
D
480,000,000,000 km
10

If astronomers discovered a new inner planet in the solar system, which characteristic would it most likely have?

A
large size
B
gaseous composition
C
many moons
D
fast revolution
11

Observable matter makes up about what percentage of the universe?

A
5%
B
10%
C
50%
D
95%
12

Which is a factor that keeps Earth in orbit around the Sun?

A
the orbital path of the moon
B
the gravitational pull of the Sun
C
the continuous motion of the universe
D
Earth’s changing speed and direction
13

The diagram shows one wavelength of a longitudinal wave.

Question illustration
A
The diagram would be wider.
B
The diagram would be narrower.
C
The diagram would have taller loops.
D
The diagram would have shorter loops.
14

Which type of star will become a black hole when it dies?

A
a protostar
B
a supergiant
C
a white dwarf
D
a red dwarf
15

What term specifically describes small chunks of rocks and debris in space that burn up in Earth’s atmosphere?

A
meteorites
B
meteoroids
C
meteors
D
meteorides
16

Which describes vestigial structures and how they relate to evolution?

A
Snakes have tiny internal hind leg bones, indicating that they likely descended from lizards.
B
Humans and dogs have similar bone structures in their forelimbs, indicating a common ancestor.
C
Dolphins and birds have structures that are adapted for swimming, but the structures did not evolve the same way.
D
The DNA of mice and chickens shows similar patterns, suggesting that the two species are related.
17

Which statement describes primary consumers?

A
They eat secondary consumers.
B
They eat producers.
C
They obtain their energy from the Sun.
D
They are found before producers in a food chain.
18

Walt made a study chart listing uses for two types of electromagnetic waves.

Question illustration
A
A: Infrared WavesB: X-rays
B
A: MicrowavesB: Ultraviolet Waves
C
A: Ultraviolet WavesB: Gamma Rays
D
A: X-raysB: Radio Waves
19

It can be seen on a cladogram that modern birds and reptiles share a common ancestor. Select the piece of evidence that best supports this idea.

A
Reptiles are also related to mammals.
B
Birds have evolved into many groups.
C
Feathers are a derived characteristic that first evolved in reptiles.
D
Birds have the derived characteristic of being warm blooded, like mammals.
20

Which is one physical property that all stars have?

A
They are made of gases.
B
They shine very brightly.
C
They have a triangle shape.
D
They contain iron in their cores.

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