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WorksheetsUnit 3 Lesson 1, 2, and 3 Review
Total questions: 62
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
Which of the following units is used to express the size of stars?
a)
km
b)
light-year
c)
solar radius
d)
Astronomical unit
2.
Which statement best describes stars?
a)
large planets that are composed mostly of gas
b)
celestial bodies made of gas that give off light
c)
faint dots of light that can be seen from Earth's surface
d)
objects that form in the outer parts of the solar system
3.
Two stars have the same apparent magnitude as seen from Earth's surface. Star A is 33 light years away. Star B is 346 light years away. Which of the following statements is true?
a)
Star B is larger than Star A
b)
Star B is more luminous (more true brightness) than Star A
c)
The stars have the same absolute magnitude
d)
None of the above
4.
Which of the following terms is the same as absolute magnitude?
a)
apparent magnitude
b)
luminosity
c)
light year
d)
temperature
5.
Which of the following star colors would have the highest surface temperature?
a)
red
b)
yellow
c)
white
d)
blue
6.
If you want to determine the absolute magnitude of a star, what information will you need?
a)
colar and temperature of the star
b)
color and composition of the star
c)
apparaent magnitude and distance the star is from Earth
d)
color and distance the star is from Earth
7.
An astronomer uses a telescope to observe a star. She observes that the color of this star is similar to the color of the sun. Therefore, she infers that the star and the sun have similar sizes and surface temperatures. Using this information, what can the astronomer conclude about the star?
a)
the star is a medium sized star
b)
the star is a white dwarf
c)
the star is hotter than most other stars in the galaxy
d)
the star is bigger than most other stars in the galaxy
8.
Galaxies contain stars, gas, and dust. What is responsible for holding all of this matter together?
a)
heat
b)
light
c)
gravity
d)
friction
9.
Which of the following terms is a measure of how bright a star appears to be as seen from Earth's surface?
a)
luminosity
b)
apparent magnitude
c)
absolute magnitude
d)
solar radii
10.
Galaxies are large groups of millions, billions, or even trillions of stars. What keeps the stars in a galaxy from moving away from each other? (SC.8.E.5.3)
a)
gravity
b)
density
c)
composition
d)
temperature
11.
Our solar system consists of eight planets. Which phrase correctly describes a planet? (SC.8.E.5.3)
a)
A large celestial body that is composed of gas and emits light
b)
Any one of the primary bodies that orbit a star
c)
Many stars held together by gravity
d)
Space and all the matter and energy in it
12.
A light-year (ly) is the distance that light travels in one year. If a star is 3 ly from Earth, how long does it take light from that star to reach Earth? (SC.8.E.5.1)
a)
3 minutes
b)
3 hours
c)
3 years
d)
3 light years
13.
Celestial bodies can be classified based on their sizes. Which of the following is the smallest? (SC.8.E.5.3)
a)
a planet
b)
the sun
c)
a red supergiant
d)
none of the above
14.
Which of these instruments would be used to get a clearer view of distant objects in the sky? (SC.8.N.1.1)
a)
a micrscope
b)
a telescope
c)
a kaleidoscope
d)
a stethoscope
15.
The Milky Way is an example of which type of galaxy? (SC.8.E.5.3)
a)
Quasar
b)
Spiral
c)
Elliptical
d)
Irregular
16.
The Sun, Earth, seven other planets and smaller bodies make up our. . .(SC.8.E.5.3)
a)
Constellation
b)
Solar system
c)
Universe
d)
Galaxy
17.
What is the solar system? (SC.8.E.5.3)
a)
Planets and smaller bodies that orbit Earth
b)
Stars and planets that orbit a galaxy
c)
Planets and smaller bodies that orbit the Sun
d)
Stars and smaller bodies that orbit planets
18.
What is a spherical body that orbits the sun? (SC.8.E.5.3)
a)
star
b)
planet
c)
solar system
19.
Which of the following is the largest? (SC.8.E.5.3)
a)
Universe
b)
Solar System
c)
Star
d)
Galaxy
20.
The _______ is the sun and all of the planets and other bodies that travel around it.
a)
solar system
b)
heliocentric
c)
geocentric
d)
parallax
21.
A sun-centered model of the solar system.
a)
heliocentric
b)
geocentric
c)
parallax
22.
A earth-centered model of the solar system.
a)
heliocentric
b)
geocentric
c)
parallax
23.
The path that a body follows as it travels around another body in space
a)
orbit
b)
gravity
c)
aphelion
d)
planetesimals
24.
Based on Kepler's Laws of Planetary motion, the point on an object orbit in which that object is farthest from the sun.
a)
orbit
b)
perihelion
c)
aphelion
d)
rotation
25.
Based on Kepler's Laws of Planetary motion, the point on an object's orbit in which that object is closest to the sun.
a)
orbit
b)
perihelion
c)
aphelion
d)
rotation
26.
The inward force that causes an object to move on a circular path.
a)
orbit
b)
revolution
c)
centripetal force
d)
rotation
27.
The cloud of dust and gas from which a solar system forms.
a)
solar nebula
b)
protostellar disk
c)
planetesimals
28.
_____ is the force of attraction between objects that is due to their masses and distances between them,
a)
rotation
b)
revolution
c)
orbit
d)
gravity
29.
Gravity between objects increases as the mass of the of the objects . . .
a)
increases
b)
decreases
c)
stays the same
30.
As the distance between two objects increases, the force of gravity . . .
a)
increases
b)
decreases
c)
stays the same
31.
The path that a body follows as it travels around another body in space is its . . .
a)
orbit
b)
rotation
c)
solar nebula
32.
The sun's outermost atmosphere. Extends millions of kilometers into space.
a)
Corona
b)
Chromosphere
c)
Photosphere
d)
Core
33.
The middle layer of the sun's atmosphere
a)
Corona
b)
Chromosphere
c)
Photosphere
d)
Core
34.
The visible surface of the sun.
a)
Corona
b)
Chromosphere
c)
Photosphere
d)
Core
35.
The layer of the sun through which energy travels by convection from the radiative zone to the photosphere.
a)
Core
b)
Radiative Zone
c)
Convective Zone
d)
Nuclear Fusion
36.
The layer of the sun through which energy is transferred away from the core by radiation.
a)
Core
b)
Radiative Zone
c)
Convective Zone
d)
Nuclear Fusion
37.
The dense center of the sun. Hot enough to cause the nuclear reactions that produce energy in the sun.
a)
Core
b)
Radiative Zone
c)
Convective Zone
d)
Nuclear Fusion
38.
The process by which two or more low-mass atomic nuclei fuse to form another, heavier nucleus.
a)
Core
b)
Radiative Zone
c)
Convective Zone
d)
Nuclear Fusion
39.
The process by which energy is transferred as electromagnetic waves.
a)
Convection
b)
Conduction
c)
Radiation
d)
Nuclear fusion
40.
Hot gases rise to the surface of the sun, cool, and then sink back into the convective zone. This process, in which heat is transferred by the circulation or movement of matter, is called . . .
a)
Convection
b)
Conduction
c)
Radiation
d)
Nuclear Fusion
41.
The rotation of a body in which different parts of a body have different periods of rotation. For example, the sun's equator rotates once in 25 days while the poles rotate once in 35 days.
a)
Nuclear Fusion
b)
Differential Rotation
c)
Orbit
d)
Gravity
42.
Dark areas that form on the surface of the sun. They are cooler than the areas that surround them.
a)
Solar flare
b)
Sunspot
c)
Prominence
d)
Core
43.
An explosive release of energy that can extend outward as far as the sun's outer atmosphere. Appear as very bright spots on the sun's photosphere..
a)
Solar flare
b)
Sunspot
c)
Prominence
d)
Core
44.
Huge loops of relatively cool gas that extend outward from the photosphere thousands of kilometers into the outer atmosphere.
a)
Solar flare
b)
Sunspot
c)
Prominence
d)
Core
45.
The sun's composition consists of 74% hydrogen, 25% helium, and 1% other elements.
a)
True
b)
False
46.
Period of rotation at the sun's equator is 35 days while the period of rotation at the pole's is 25 days.
a)
True
b)
False
47.
Period of rotation at the sun's equator is 25 days while the period of rotation at the pole's is35 days.
a)
True
b)
False
48.
The sun's atmosphere has three layers ______, _____, and _______.
a)
Core, radiative zone, convective zone
b)
Photosphere, convective zone, core
c)
photosphere, chromosphere, core
d)
photosphere, chromosphere, corona
49.
Which scientist determined that planets orbit in an elliptical patterns instead of a circular pattern?
a)
Galileo
b)
Copernicus
c)
Kepler
50.
What is the layer of the sun from which energy escapes?
a)
Photosphere
b)
Core
c)
Sunspot
51.
What is the layer of the sun in which energy is produced?
a)
Photosphere
b)
Core
c)
Sunspot
52.
What is the layer of the sun through which energy is transferred away from the core by radiation?
a)
Radiative zone
b)
Convective Zone
c)
Photosphere
d)
Core
53.
Galaxies are large groups of millions, billions, or even trillions of stars. What keeps the stars in a galaxy from moving away from each other? (SC.8.E.5.3)
a)
gravity
b)
density
c)
temperature
d)
composition
54.
Ashley conducts an investigation on the effects of water amounts for seed sprouting. She knows that replication and replicable results are important for the quality of the investigation. How can Ashley determine if her results are replicable? SC.7.N.1.2
a)
Ashley can carefully record her observations.
b)
Ashley can conduct her experiment with large sample sizes.
c)
She can ask other students to perform the experiment
d)
Ashley can perform the experiment multiple times.
55.
What are the three main categories of elements on the periodic table? SC.8.P.8.5
a)
Metals, nonmetals, and metalloids
b)
Reactants, products, and catalysts
c)
Solids, liquids and gases
d)
Acids, bases and neutral solutions
56.
The pull of gravity on a camera is a camera’s... SC.6.P.1.3.1
a)
Mass
b)
Weight
c)
Density
d)
Volume
57.
What are neutrons?
a)
Uncharged particles in an atom’s nucleus
b)
Uncharged particles that form a cloud around a nucleus
c)
Negatively charged particles in an atom’s nucleus
d)
Charged particles that from a cloud around a nucleus
58.
Plants absorb and store some of the energy in sunlight through a series of reactions called … SC.6.L.14.4.
a)
Combustion
b)
Decomposition
c)
Photosynthesis
d)
Cellular respiration
59.
How often does Earth make one complete rotation on its axis? SC.8.E.5.9
a)
once a day
b)
once a week
c)
once a month
d)
once a year
60.
Earth is one of eight planets that orbit the . . .
a)
Moon
b)
Sun
c)
Galaxy
d)
Universe
61.
Gravity is a force that. . . SC.8.E.5.7
a)
Pulls an object toward another object
b)
Exists only on Earth
c)
Causes two objects in contact to slow down or stop
d)
Exists only on Planets
62.
Of the following objects, which ones have the most gravitational forces according to the law of universal gravitation? SC.6.P.13.1
F = m1 x m2/d
F = m1 x m2/d
a)
Two 10 kg balls that 1 m apart
b)
One 10 kg ball and one 1 kg ball that are 1 m apart
c)
Two 1 kg balls that are 1 m apart
d)
There are no gravitational forces acting
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