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Final Review Part 2

Total questions: 60

Worksheet time: 39mins

Name
Class
Date
1.

Which of the following technologies relies on the principle of the photoelectric effect?

a)

AM radio

b)

Fiber optic cables

c)

Bluetooth devices

d)

Solar panels

2.
A digital camera takes pictures by capturing information about the intensity and color of light for every tiny section of the image and then doing which of the following?
a)
Converting the information to numeric data
b)
Sending the information to a satellite
c)
Creating an exact duplicate of the image
d)
Storing the light in specialized cells
3.
Binary code is an example of...
a)
Digital data transmission
b)
Analaog data transmission
c)
Binary can be used in either format
4.
You want to send an email- you have a choice of sending the email using digital or analog transmission methods. Which method will guarantee a higher degree of accuracy transmission
a)
Digital
b)
Analog
c)
Both methods have the same accuracy
5.
Photodiodes are semiconductor devices that transform light into an electrical current. Photodiodes are used in many electronics, including remote controls and compact disc players. This technology depends on which specific characteristic of light?
a)
Light waves can interact to create waves of greater or lesser amplitude.
b)
Light waves scatter when they reflect off a rough, uneven surface.
c)
Light can cause some materials to emit electrons when it strikes them.
d)
Light travels faster through a vacuum than it does through a medium.
6.
What is Hubble's Law and how does it relate to the expansion of the universe?
a)
Hubble's Law states that galaxies are moving towards us, indicating a universe that is getting smaller
b)
Hubble's Law states that galaxies are moving away from us, indicating a universe that is expanding
c)
Hubble's Law states that galaxies are stationary, indicating a static universe
d)
Hubble's Law states that galaxies are moving in random directions, indicating a chaotic universe
7.
The most commonly held theory of the origin of the universe claims that it formed as the result of a violent event that rapidly sent all matter in existence flying outward from a single point. This theory is supported by which of the following observations?
a)
All of the galaxies in the universe appear to be moving away from one another.
b)
All of the objects in the universe are approximately the same age.
c)
The temperature in all parts of the universe is relatively consistent.
d)
All elements are evenly distributed in all parts of the universe.
8.
Which of the following observations about hydrogen and helium provides the best evidence to support the big bang theory?
a)
The composition of gases in stars and in the universe is ¾ hydrogen and ¼ helium.
b)
Within the cores of stars, atoms of hydrogen are fused into atoms of helium.
c)
Hydrogen and helium are only found in the form of a gas in the universe.
d)
One atom of helium has twice the atomic mass of one atom of hydrogen.
9.
What is the best description of the big bang?
a)
A massive explosion that created everything in the universe
b)
Two planets collided, creating the Sun and other planets.
c)
A rapid expansion of a densely packed, small area that expanded into the universe that we know today
d)
An explanation of how the universe is expanding and how big it is
10.
What does it mean if a galaxy gives off light that has been shifted toward the red end of the electromagnetic spectrum?
a)
The galaxy is moving away from Earth.
b)
The galaxy is much older than Earth.
c)
The galaxy is very hot and has not cooled down.
d)
The remnants of an explosion are between the galaxy and Earth.
11.
What is one piece of evidence that supports the big bang theory?
a)
The universe is cooling down
b)
The rotation and revolution of the Earth
c)
That the universe formed over 13 billion years ago
d)
A weak signal of cosmic microwave background radiation
12.
The temperature of the universe is....
a)
gradually decreasing
b)
gradually increasing
c)
rapidly increasing
d)
rapidly decreasing
e)
constant throughout the known history of the universe
13.
Which of the following is true about galaxies?
a)
Galaxies are moving away from each other
b)
Galaxies are moving toward each other
c)
Galaxies never move relative to each other
d)
Galaxies move in a random pattern
14.
When an object in the sky is "red-shifted" its wavelength is ______________ and its frequency is ___________
a)
increased, decreased
b)
increased, constant
c)
increased, increased
d)
deceased, decreased
15.

What does the cosmic microwave background radiation tell us about the early universe?

a)

It was composed mostly of dark matter

b)

It was filled with heavy elements

c)

It was hot and dense

d)

It was extremely cold and static

16.

According to Hubble's Law...

a)

Most galaxies are moving towards the Earth

b)

Galaxies further away from the Earth are moving away at a faster rate

c)

Galaxies are blueshifted

d)

Only galaxies close to the Earth are redshifted

17.

The CMB (Cosmic Background Radiation) is:

a)

the remaining energy from the big bang.

b)

incredibly cool.

c)

a cloud of light

d)

only located in certain places in the universe.

18.
Most of the stars in the universe are...
a)
Main sequence stars
b)
White dwarfs
c)
Blue giants
d)
Red supergiants
e)
Red giants
19.
Which type of star has a low temperature but a high luminosity?
a)
Red supergiants
b)
White giant
c)
Blue giant
d)
Main sequence
e)

Black dwarfs

20.
What star type has the highest density and the smallest size?
a)
Red giant
b)
White dwarf
c)
Neutron star
d)
Yellow dwarf
e)
Blue supergiant
21.
What state of matter makes up most of the sun?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
22.
After its current state, our sun will transition into a __________
a)
red giant star
b)
yellow dwarf star
c)
black hole
d)
blue giant star
e)
white dwarf star
23.
What process in the sun creates Helium from Hydrogen?
a)
Nuclear Decay
b)
Nuclear Fusion
c)
Nuclear Explosions
d)
Nuclear Fission
24.
Complete the following Rock layers : Earth ::_____ : the Sun
a)
Light layers
b)
Force of gravity
c)
Temperature layers
d)
Gas layers
25.
What process produces the light and heat of the Sun?
a)
nuclear fusion reactions, in which hydrogen is changed into helium
b)
nuclear fusion reactions, in which hydrogen is destroyed
c)
nuclear fission reactions, in which nitrogen is changed into oxygen
d)
nuclear fission reactions, in which helium is changed into hydrogen
26.
The sun's atmosphere contains which of the two following components?
a)
Corona
b)
Photosphere
c)
Nucleus
d)
Core
e)
Stratosphere
27.
70% of the sun is ____________, 28% of the sun is __________
a)
Hydrogen, Helium
b)
Helium, Hydrogn
c)
Nitrogen, Oxygen
d)
Hydrogen, Water
e)
Helium, Carbon
28.
Solar flares may be used to predict which of the following?
a)
A decrease in the production of helium in the sun’s core
b)
A rapid and dramatic change in the overall mass of the sun
c)
The depletion of all of the sun’s fuel in the near future
d)
An increase in radiation from the sun reaching the earth
29.
What is "solar wind"
a)
Wind created by the sun's atmosphere
b)
Stream of charged particles from the sun's upper atmosphere
c)
Gamma waves released from the sun's core
d)
Visible light reflected off light in the solar system
30.

What is the primary factor that determines the color of a star?

a)

Its size

b)

Its distance from Earth

c)

Its temperature

d)

Its age

31.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
32.

Would the surface temperature of a red supergiant be higher or lower than a white dwarf?

a)

Higher

b)

Lower

33.

Which star has the highest temperature?

a)

A

b)

B

c)

C

d)

D

34.

What is the primary evidence for the expansion of the universe?

a)

The presence of black holes.

b)

The redshift of light from distant galaxies.

c)

The blue shift of light from nearby stars.

d)

The rotation of galaxies.

35.

The only way to increase the number of photoelectrons emitted is by increasing the _________ of the light

a)

Intensity

b)

Wavelength

c)

Frequency

d)

Energy

36.
This image is an illustration of
a)
photoelectric effect
b)
Dalton's atomic theory
c)
Bohr model
d)
Quantum mechanical model
37.

The intensity of light from a celestial body that can be used to identify the body's characteristics.

a)

Star

b)

Hertzsprung Russell Diagram

c)

Luminosity

38.

What is black body radiation?

a)

Radiation emitted by a perfect reflector

b)

Radiation emitted by a perfect absorber

c)

Radiation emitted by a transparent body

d)

Radiation emitted by a coloured body

39.

Which of the following is a property of black body radiation?

a)

It depends on the material of the body

b)

It depends on the temperature of the body

c)

It depends on the shape of the body

d)

It depends on the colour of the body

40.

Which star stage is generally the HOTTEST?

a)

Supergiant

b)

Giant

c)

Main Sequence

d)

White Dwarf

41.

what are hr diagrams?

a)

something for math

b)

a graph about stars

c)

a way to classify stars

d)

i dont know

42.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
43.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
44.
As a whole, Giants are considered hotter than White Dwarfs.
a)
True
b)
False
45.

What is found on the X-axis of an H-R diagram?

a)

Luminosity

(or brightness)

b)

Temperature

c)

Star Size

d)

Distance

46.

Which group is found in the bottom left corner of the H-R Diagram?

a)

Supergiants

b)

Giants

c)

Main Sequence

d)

White Dwarfs

47.
What is the best title for this picture?
a)
Birth of a Star
b)
Birth of a Universe
c)
Life Cycle of a Star
d)
Big Bang Theory
48.
Which is an example of a Main Sequence star?
a)
Betelgeuse
b)
our Sun
c)
Sirius B
d)
Polaris
49.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
50.
Stars can take different paths due to having different _____________
a)
temperature
b)
mass
c)
brightness
d)
color
51.
All stars start as gas and dust in a(n)
a)
nebula
b)
black hole
c)
red giant
d)
black dwarf
52.
After the main sequence, a low mass star becomes a
a)
black dwarf
b)
protostar
c)
red giant
d)
supergiant
53.
After the main sequence, a high mass star becomes a
a)
black dwarf
b)
protostar
c)
red giant
d)
supergiant
54.
The final stage of a low mass star is a 
a)
neutron star
b)
nebula
c)
black hole
d)
black dwarf
55.

Which element is most abundant in the universe as a result of the big bang?

a)

Iron

b)

Hydrogen

c)

Carbon

d)

Oxygen

56.

Which phenomenon explains why electrons are emitted from a metal surface when light shines on it?

a)

Photoelectric effect

b)

Diffraction

c)

Refraction

d)

Polarization

57.

What happens to the energy of photoelectrons if the frequency of incident light is increased?

a)

The number of photoelectrons decreases

b)

The energy remains the same

c)

The energy decreases

d)

The energy increases

58.

Which description is considered most accurate regarding what actually happened during the Big Bang?

a)

Two galaxies collided causing an immense explosion as stars crashed into one another

b)

All of what would become the universe was concentrated in a single small point, or singularity, which rapidly expanded into what is now stars, planets, galaxies, matter, and energy.

c)

All matter emerged from a massive black hole at the center of the universe.

d)

Parts of the sun were ripped off by massive internal explosions and were thrown into space where they cooled to become other things, like plants, comets, and other galaxies.

59.

The largest element that can be formed inside of a star is...

a)

Iron

b)

Helium

c)

Neon

d)

Magnesium

60.

How many Hydrogen atoms are needed in nuclear fusion to create an atom of Helium

a)

1

b)

2

c)

3

d)

4

e)

It depends on the reaction

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