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10 Science - Term 4 Revision

Total questions: 71

Worksheet time: 47mins

Name
Class
Date
1.
A giant cloud of gas and dust, it is made mostly of Hydrogen and Helium.
a)
Supernova 
b)
Nebula 
c)
Planetary Nebula 
d)
Gravity 
2.

A huge ball of gas held together by gravity. The central core is extremely hot and produces energy from Nuclear fusion.

a)

Star

b)

Nebula 

c)

Mass

d)

Gravity 

3.
A process in stars where two Hydrogen atoms combine to form Helium and release energy.
a)
Nebula 
b)
Nuclear Fusion 
c)
Supernova 
d)
Gravity 
4.
All low/medium mass stars will eventually 
a)
explode into a supernova
b)
become a black hole
c)
change into a white dwarf 
d)
become a neutron star
5.
A high mass star is different from a low/medium mass star because,
a)
it does not begin as a nebula
b)
it does not end
c)
it does not have a white dwarf stage
d)
it does not use nuclear fusion
6.
What stage do stars, no matter their size, spend most of their time?
a)
stellar nebula 
b)
main sequence
c)
red giant
d)
white dwarf
7.
A ________ is an object so dense with so much gravity that even light cannot escape.
a)
neutron star
b)
white dwarf
c)
blackhole
d)
black dwarf
8.

Which object is known for its intense pull of gravity?

a)

nebula

b)

Black hole

c)

Super Giant

d)

A Galaxy

9.
At which stage does a star swell up many times larger than its normal size?
a)
Protostar
b)
Nebula
c)
Main Sequence
d)
Red Giant
10.
A ring-shaped nebula formed by an expanding shell of gas around an aging star. The leftover core eventually becomes a white dwarf.
a)
Supernova 
b)
Nebula 
c)
Planetary Nebula 
d)
Gravity 
11.
A high mass star that eventually explodes.
a)
Nebula 
b)
Planetary Nebula 
c)
Supernova 
d)
Star 
12.
A huge ball of gas held together by gravity. The central core is extremely hot and produces energy.
a)
Star
b)
Nebula 
c)
Mass
d)
Gravity 
13.
What is happening during the white dwarf stage?
a)
neuclear fusion
b)
the star is cooling off/nothing
c)
nebula explosion
d)
radioactive decay
14.
What makes a massive star and low/medium mass star different?
a)
temperature
b)
luminosity 
c)
color
d)
mass/size
15.
Low/medium stars, like our Sun, are likely formed directly from a 
a)
nebula
b)
supernova
c)
red giant
d)
black dwarf
16.

The Big Bang Theory is the most widely accepted theory about the origin of the universe.

a)

true

b)

false

17.
Which of the following is evidence of the Big Bang Theory?
a)
Cavemen heard a loud bang at the beginning of time.
b)
The universe isn't moving
c)
The universe is expanding
d)
The universe is getting smaller
18.
How did the discovery of Cosmic Microwave Background Radiation support the Big Bang Theory?
a)
It suggests that Hydrogen and Helium were the first elements to form.
b)
It confirms the age of the Earth to be around 5 billion years old.
c)
It supports the idea that the universe used to be hotter.
d)
It demonstrates that the universe continues to expand.
19.
What can we conclude from the observation that nearly all galaxies are moving away from us?
a)
Massive black holes are drawing galaxies away from Earth.
b)
The Sun and Earth are located at the center of the universe.
c)
Everything in the universe is moving the same direction.
d)
The once-smaller universe is expanding in all directions.
20.

Galaxies that are REDSHIFTED are:

a)

actually BLUE

b)

really NEAR earth

c)

invisible or not visible

d)

moving AWAY from us.

21.

If something that makes light is moving AWAY from you, it spreads the wavelengths of light out. This application of the Doppler effect is known as ___.

a)

blue shift

b)

green shift

c)

red shift

d)

black shift

22.

Most distant galaxies show a RED SHIFT. This is considered EVIDENCE that the universe is ___.

a)

getting cooler

b)

expanding

c)

condensing into a small point

d)

swirling around

23.

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.

24.

Ever since the universe began, the universe has been

a)

expanding

b)

contracting

c)

stays the same size

25.

A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago.

a)

Big Bang Theory

b)

Singularity Theory

c)

Galaxy Theory

26.

A large grouping of stars, planets, gas, and dust in space held together by gravity.

a)

Universe

b)

Galaxy

c)

Space

27.

A unit of length equal to the distance that light travels through space in one year.

a)

Leap Year

b)

Light-Year

c)

Frequency

28.

Hubble's Law states that galaxies are moving away from Earth. The farther the galaxy is, the....

a)

Faster they are moving away from Earth.

b)

Slower they are moving away from Earth.

c)

Less movement there is.

d)

Greater the mass of the planet

29.

True or False: Exoplanets are planets outside of our Solar System.

a)

True

b)

False

30.

What are the 3 layers of the suns interior

a)

Radiation Zone, Convection Zone, Core

b)

Radiation Zone, Corona, Nuclear Fusion

c)

Corona, Convection Zone, Core

d)

Chromosphere, Convection Zone, Solar Wind

31.

____________are areas of gas on the sun that are cooler than the gas around them.

a)

Solar Wind

b)

Solar Flares

c)

Sunspots

d)

Core

32.
When we look at the sun, what layer are we viewing?
a)
photosphere
b)
chromosphere
c)
corona
d)
convection zone
33.
What layer of the sun's atmosphere gives the sun its "white halo" during a solar eclipse?
a)
chromosphere
b)
photosphere
c)
corona
d)
atmosphere
34.
When prominences erupt into space releasing gas and energy we call this: 
a)
solar winds
b)
coronal outburst
c)
solar flares
d)
auroras
35.
What layer can be seen here?
a)
chromosphere
b)
corona
c)
photosphere
d)
core
36.

Possible human solutions for limiting global warming and climate change are...

a)

being more energy-efficient

b)

using renewable sources of energy

c)

removing carbon from fossil fuel emissions

d)

all of the above

37.

MAIN greenhouse gas responsible for Climate Change is:

a)

nitrogen

b)

carbon

c)

carbon dioxide

d)

methane

38.

Which natural process removes carbon dioxide from the atmosphere?

a)

forest fires

b)

volcanic eruptions

c)

cellular respiration

d)

photosynthesis

39.

T/F - The amount of carbon dioxide CO2 in the atmosphere is decreasing.

a)

True

b)

False

40.

Which human activity contributes the MOST carbon dioxide to the atmosphere?

a)

fishing

b)

farming

c)

breathing

d)

burning fossil fuels

41.
Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.
a)
water
b)
gases
c)
heat
d)
water vapor
42.
Which of the following is the best conclusion that can be made from this graph?
a)
atmospheric carbon dioxide levels have been decreasing since 1960
b)
Hawaii has a lot of carbon dioxide
c)
humans have been working hard to decrease carbon dioxide levels
d)
atmospheric carbon dioxide levels have increased steadily since 1960
43.

Which of the following have been changed or altered due to climate change ?

a)

droughts

b)

flooding

c)

melting of polar ice caps

d)

all of the above

44.
T/F: Some greenhouse gases are naturally present in the Earth's atmosphere
a)
True
b)
False
45.
Carbon is stored in
a)
Trees and other living things
b)
Oceans
c)
underground in soil and fossil fuels
d)
All are correct
46.
The warming of the atmosphere by the trapping of heat being radiated to space is called
a)
evaporation
b)
condensation
c)
the greenhouse effect
d)
radiation
47.

Without the greenhouse effect, Earth's atmosphere would be __________ to support life.

a)

too hot

b)

too wet

c)

too dry

d)

too cold

48.

Which of the following is NOT a greenhouse gas?

a)

Carbon Dioxide

b)

Oxygen

c)

Methane

d)

Water Vapor

49.

What is it called when CO2 is absorbed by the ocean and reacts with seawater to produce acid.

a)

water pollution

b)

ocean acidification

c)

seaweed salad vinegar

d)

hydrochloric acid

50.
Water vapor is a greenhouse gas
a)
True
b)
False
51.
What is the water cycle?
a)
the 3 forms of water
b)
the movement of water on, above, or below the surface of the Earth
c)
when water melts
d)
when clouds form
52.
What is is called when water turns into a vapor?
a)
EVAPORATION
b)
PRECIPITATION
c)
TRANSPIRATION
53.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
54.
What is the energy source for the water cycle?
a)
the sun
b)
the earth
c)
water
d)
the moon
55.

According to this diagram, what are two methods by which water is converted to vapor? (Select TWO answers)

a)

Condensation

b)

Transpiration

c)

Evaporation

d)

Precipitation

56.

In which layer of the atmosphere is the ozone layer found?

a)

troposphere

b)

stratosphere

c)

mesosphere

d)

thermosphere

57.

Which type of radiation is absorbed by the ozone layer?

a)

infrared

b)

gamma

c)

visible light

d)

ultraviolet

58.

CFCs are responsible for the damage caused to the ozone layer. Select ALL of chemical elements make up CFCs.

a)

Carbon

b)

Hydrogen

c)

Oxygen

d)

Fluorine

e)

Chlorine

59.

The ozone layer is important because:

a)

It is a turbulence free zone for planes to fly in.

b)

It absorbs harmful rays produced by the sun

c)

It produces most of the oxygen needed for organisms in the troposphere

60.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
61.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
62.
Combustion is another word for __________.
a)
Transportation
b)
Respiration
c)
Fossil Fuels
d)
Burning
63.

Which gas do plants release, that humans depend on for survival?

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sugar

64.

Plants use ____________ to make their own food

a)

Water

b)

Sunlight

c)

Carbon dioxide

d)

All of these

65.
Respiration is the process by which animals take in _____ and release _____. 
a)
photosynthesis, air
b)
carbon, oxygen
c)
oxygen
d)
oxygen, carbon dioxide
66.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
67.

Which statement is an example of how carbon moves through a food chain as part of the cycle?

a)

Producers release carbon dioxide, and consumers take it it.

b)

Producers take in carbon dioxide, and consumers release it.

c)

Producers take in carbon from the soil, and they release it when they decompose.

d)

Producers release carbon into the soil, and consumers take it in from the soil.

68.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
69.

Which process(es) release carbon dioxide into the atmosphere?

a)

respiration

b)

combustion

c)

photosynthesis

d)

feeding

70.

What type of organism receives carbon present in dead plants and animals?

a)

producer

b)

primary consumer

c)

secondary consumer

d)

decomposer

71.

Which gas is not greenhouse gas?

a)

Carbon dioxide

b)

Methane

c)

Nitrogen

d)

Nitrous oxide

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