AnswersOC27 EarthSpace Sci-2001310-S2-NelsonUnit Test

Unit 6: Test Answers

0 verified answers2 views
1
Free Preview

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

A
neap tide
B
spring tide
C
solar eclipse
D
lunar eclipse
2
Free Preview

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.
3

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
4

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.
5

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.
6

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
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

Which best describes the purpose of bar graphs?

A
They show changes over a period of time.
B
They compare quantities for particular categories.
C
They show the relationship among parts of a whole.
D
They compare ranges as continuous data.
9

Which describes data that is faked or misplaced?

A
reasonable
B
authentic
C
invalid
D
accurate
10

Which type of star system has the most stars?

A
open cluster
B
globular cluster
C
eclipsing binary
D
binary star system
11

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.
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 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
14

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.
15

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
16

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.
17

What is released through nuclear fusion in stars?

A
energy
B
gas
C
mass
D
pressure
18

Which object(s) formed last in our solar system?

A
the Sun
B
the solar nebula
C
the inner planets
D
the planetesimals
19

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
20

Analyze the graph.

Question illustration
A
increasing parking meters
B
increasing traffic signals
C
increasing places to park bikes
D
decreasing bike-repair shops

Did you find these answers helpful?

More from this Course

Quiz
5 verified answers

Unit 9 Test

Assignment
24 verified answers

Lesson 6.3 Origin and Evolution of the Universe

Assignment
17 verified answers

Lesson 8.3 Electromagnetic Waves