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Topic 10 Review

Total questions: 66

Worksheet time: 53mins

Name
Class
Date
1.
Nuclear fusion is when
a)
the nuclei of two atoms join to produce lots of energy
b)
the nuclus of a large atom splits to release lots of energy
2.
Energy is created in the core when two _____________ atoms join together to form a ______________ atom.
a)
helium, hydrogen
b)
carbon, hydrogen
c)
nitrogen, helium
d)
hydrogen, helium
3.
The middle layer of the sun's interior that contains very tightly packed gas is called the _____________.
a)
photosphere
b)
chromosphere
c)
radiation zone
d)
convection zone
4.
In which area of the sun does gas rise as it heats up, then fall back down as it cools?
a)
the core
b)
the radiation zone
c)
the convection zone
d)
the corona
5.
When we look at the sun, what layer are we viewing?
a)
photosphere
b)
chromosphere
c)
corona
d)
convection zone
6.
What layer can be seen here?
a)
chromosphere
b)
corona
c)
photosphere
d)
core
7.
the distance light travels in one Earth year; about 9.5 trillion km
a)
galaxy
b)
universe
c)
light-year
d)
corona
8.
What is the sun mostly made up of
a)
Helium
b)
Core
c)
Carbon
d)
Hydrogen
9.
Where does nuclear fusion occur?
a)
Space
b)
Radiation Zone
c)
Photosphere
d)
The Core
10.
The middle of the Sun is called the
a)
Corona
b)
Photosphere
c)
Core
d)
Convection Zone
11.
What features can you see on the sun
a)
sunspots & prominences
b)
The core
c)
The moon 
d)
Earth
12.
What is this
a)
Prominice
b)
sun spot
c)
core
d)
Earth
13.
Can we landed on the sun?
a)
Yes, If we use metal suits
b)
No, It doesn't have a solid surface
c)
Yes, but we can't stay very long
d)
No, Its against the law.
14.
What happens during nuclear fusion
a)
Hydrogen reacts with Oxygen to create fire.
b)
Hydrogen atoms are forced together to create Helium
c)
Uranium and Plutonium split apart and release radiation.
d)
Helium atoms break down to make hydrogen
15.
What layer are you looking at when you take a picture of the sun?
a)
Core
b)
Photosphere
c)
Solar Wind
d)
Corona
16.
Why are sunspots darker than the surrounding areas?
a)
The hotter gas releases less light
b)
The Cooler gas releases less light
c)
They look that way because the light form the sun 
d)
They are created by shadows from the moon.
17.
Can only be seen during a solar eclipse; outer layer; looks like a white halo
a)
corona
b)
photosphere
c)
core
d)
fusion
18.
Huge looping eruptions of gas; usually near sunspots; arch out into outer layers than fall back down.
a)
corona
b)
core
c)
prominence
d)
solar flare
19.
These are the pretty lights that occur at the north and south poles.
a)
Photosphere
b)
Aurora
c)
Magnetic field
d)
Solar wind
20.
These can disrupt electronics on Earth.
a)
Sunspots
b)
Solar flares
c)
Comets
d)
Mars
21.
Why can we not see the corona when we look at the sun?
a)
It is invisible 
b)
It is in the center of the sun
c)
The photosphere is to bright.
d)
There is nothing to see.
22.
Planets that are closer to the sun
a)
take more time to orbit
b)
take less time to orbit
23.
The order of the planets is:
a)
Mars,Venus,Earth,
Mercury,Saturn
Jupiter, Uranus, Neptune
b)
Earth,Venus,Mars
Jupiter, Neptune,
Mercury,Saturn,
Uranus
c)
Mercury,Venus,Earth
Mars,Jupiter,
Saturn,Uranus
Neptune
24.
Which planet is the largest?
a)
Jupiter
b)
Saturn
c)
Uranus
d)
Neptune
25.
Which Planet comes after Earth in the solar system?
a)
Mercury
b)
Mars 
c)
Venus 
d)
Eros
26.
The spinning of an object on its axis is called______
a)
orbit
b)
rotation
c)
revolution
d)
tide
27.
Day and night is caused by the _____________ of earth on its axis.
a)
revolution
b)
orbit
c)
rotation
28.
The earth orbits around...
a)
the sun.
b)
the moon
c)
other planets
d)
the Milky Way
29.
What are the reasons for the seasons?
a)
Earth's tilt and rotation.
b)
Earth's rotation and revolution.
c)
Earth's tilt and revolution.
d)
Earth's tilt and resolution
30.

Which has an effect on how strongly the Sun pulls on an object in space?

a)

distance and shape

b)

mass and distance

c)

matter and shape

d)

mass and shape

31.

What causes planets and other space objects to revolve around the Sun rather than traveling in a straight line as indicated by the solid arrows in the picture below?

a)

axis tilt

b)

gravity

c)

revolution

d)

rotation

32.

Which of the following data can help someone to infer the size of a planet?

a)

how many moons it can capture due to its pull of gravity

b)

its surface geography

c)

its surface temperature

d)

how far it is from the sun

33.

Which correctly describes the gravity between objects in the solar system?

a)

Objects far from the Sun are not large enough to pull on any other objects in the solar system.

b)

Objects in orbit are in motion and are not affected by gravity.

c)

Objects far apart pull on each other more strongly than objects close together

d)

Objects with a large mass pull with more force than objects with a small mass.

34.

The Moon and Earth both orbit the sun

a)

True

b)

False

35.

How tightly or loosely packed the molecules of a substance are:

a)

density

b)

conduction

c)

convection

d)

radiation

36.

When air is heated it becomes...

a)

More dense

b)

Less dense

c)

Heavier

d)

Moist

37.

When air moves into the upper atmosphere it becomes...

a)

Cool and heavy

b)

Cool and light

c)

Warm and heavy

d)

Warm and light

38.

Which picture shows material that is more dense?

a)

The picture of the left

b)

The picture on the right

39.
Made of ice, dust and gas
a)
asteroid
b)
meteoroid
c)
comet
d)
meteor
40.
Appears as a streak in the sky.
a)
asteroid
b)
meteoroid
c)
comet
d)
meteor
41.
Made of very dense rock and metal that is very different from the rocks that make up the inner planets.
a)
asteroid
b)
meteoroid
c)
comet
d)
meteor
42.
Often called shooting stars.
a)
asteroid
b)
meteoroid
c)
comet
d)
meteor
43.
Sometimes called "dirty snowballs".
a)
asteoids
b)
meteoroids
c)
comets
d)
meteors
44.
Burns and vaporizes as it nears the sun.
a)
asteroid
b)
meteoroid
c)
comet
d)
meteorite
45.
Piece of a meteoroid that strikes the earth's surface
a)
comet
b)
asteroid
c)
meteor
d)
meteorite
46.
A light year is the 
a)
distance that light travels in one year
b)
Speed at which light travels 
47.
What is a galaxy?
a)
A large storm of comets. 
b)
A parallel universe that existed before the Big Bang. 
c)
A collection of stars, dust, and gas bound together by gravity 
d)
Unknown 
48.
The average distance between the earth and the sun is the 
a)
astronomical unit 
b)
Light year
49.

What is Light Year?

a)

The distance travelled by light in a second

b)

The distance travelled by light in a minute

c)

The distance travelled by light in a year

d)

The distance travelled by light in a decade

50.

1 A.U. =

a)

1.5 x 1012 km

b)

9.5 x 1012 km

c)

1.5 x 108 km

d)

9.5 x 108 km

51.

Why do we use light years and astronomical units to measure distances in space?

a)

Scientists want to sound smart.

b)

Hubble discovered these units and wanted to use them.

c)

Space is too small to use km, it wouldn't make sense.

d)

Space is too big, vast, enormous to use traditional units, like miles or kilometres.

52.

Describe convection currents in the convection layer of the sun.

4 lines
53.

What is magnitude?

a)

degree of compactness of a star.

b)

degree of temperature of a star.

c)

the age of a star.

d)

degree of brightness of a star.

54.

Using the HR diagram, choose the color of Zeta Eridani

a)

blue

b)

white

c)

yellow

d)

red

55.

Which star is hotter than Deneb

a)

Procyon

b)

Sun

c)

Regel

d)

Banard's Star

56.

Which star is brighter than the sun?

a)

Sirius B

b)

Procyon B

c)

Van Maanan's Star

d)

Aldebaran

57.

Which of the following lists the lifecycle of a star correctly?

a)

Supergiant, Giant, Dwarf, Nebula

b)

Supernova, Supergiant, Giant, Dwarf

c)

Dwarf, Main Sequence, Supergiant, Giant

d)

Main Sequence, Giant, Supergiant, Dwarf

58.

What is the Hertzsprung-Russel Diagram?

a)

A map which tells the approximate location of stars in the Milky Way galaxy and their distance from Earth.

b)

A table that alphabetically lists stars by name and includes dates of when the star was first charted.

c)

A chart which organizes stars into categories based on the amount of Hydrogen they burn.

d)

A graph used to classify stars according to their luminosity, color, temperature, and stage.

59.

Knowing the color of a star also tells us its __________

a)

age

b)

location

c)

temperature

d)

name

60.
Which of these stars is hottest?
a)
Red Star
b)
Yellow Star
c)
Orange Star
d)
Blue Star
61.
Which category is our Sun located in?
a)
White Dwarfs
b)
Supergiants
c)
Main Sequence
d)
Giants
62.
Compared to the rest of the stars, our sun is considered...
a)
Extremely Large and Cold
b)
Small with a medium temperature
c)
Medium size with medium temperature
63.
The category that contains the most stars is...
a)
Main Sequence
b)
Supergiants
c)
Giants
64.
Red stars are the _____________.
a)
hottest
b)
coolest
c)
biggest
d)
brightest
65.
Blue stars are the _____________.
a)
hottest
b)
coolest
c)
smallest
66.
What is a large spherical body that orbits a star?
a)
Meteorite
b)
Black hole
c)
Planet
d)
Nebula

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