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observing the stars

Total questions: 119

Worksheet time: 3570secs

Name
Class
Date
1.

There are many billions of stars in the universe. Some of these stars are much, much larger than the Sun. Why don't stars that are larger than the Sun completely light up the Earth's sky?

a)

These stars are colder than the Sun.

b)

These stars are much farther away than the Sun is.

c)

These stars are dark on the side that faces the Earth.

d)

These stars don't give off as much light as the Sun.

2.

There are many billions of stars in the universe. Some of these stars are much, much larger than the Sun. Why don't stars that are larger than the Sun completely light up the Earth's sky?

a)

These stars are colder than the Sun.

b)

These stars are much farther away than the Sun is.

c)

These stars are dark on the side that faces the Earth.

d)

These stars don't give off as much light as the Sun.

3.

These objects made of hot gases and produces light are known as...

a)

star

b)

radius

c)

light year

d)

luminosity

4.

One of the closest stars to Earth is Alpha Centauri A. It is larger than the Sun, yet it appears much less bright. Which of the following is the best explanation for this?

a)

The smaller a star is, the more concentrated its energy is, so it appears brighter.

b)

The difference in brightness is due to the difference in relative distance.

c)

Dust in the Earth’s atmosphere absorbs the light of all the stars we see.

d)

As stars get older, the amount of light they give off decreases.

5.

How many of the stars, visible in the night sky, are closer to Earth than the Sun?

a)

All of them

b)

About half of them

c)

None of them

d)

Only one

6.

An astronomer is studying two stars that have about the same size and brightness. From the Earth, one of the stars appears very bright in the night sky. The other star appears very faint and dim.

Why does one star appear to be brighter than the other?

a)

The Earth is closer to the brighter star.

b)

The Earth is farther from the brighter star.

c)

The Earth is moving toward the dimmer star.

d)

The Earth is moving toward the brighter star.

7.

The distance from the center of a sphere to its surface is known as...

a)

star

b)

radius

c)

light year

d)

luminosity

8.

Data from four different stars is provided in the table.

Based on the information provided, which of the stars will appear the brightest to observers on Earth?

a)

A

b)

B

c)

C

d)

D

9.

The amount of light given off by a star is known as...

a)

star

b)

radius

c)

light year

d)

luminosity

10.

A light year is...

a)

The speed light travels

b)

How long it takes light to get to you from the sun

c)

The distance light can travel in a year

d)

How many years it takes light to be emitted

11.

Which statement about the sun and other stars is TRUE?

a)

The sun is much larger than other stars so it blocks our view of the other stars during daylight hours.

b)

The sun is much closer to Earth than other stars so its brightness blocks the light from the other stars during daylight hours.

c)

The sun is about as bright as other stars so the light from other stars is visible during most daylight hours.

d)

The sun is much closer to Earth than the other stars, but the other stars are visible most daylight hours.

12.

Charlie looks into the sky with his telescope. One of the stars he sees is a small dot of light named Vega.

Vega is about twice as wide as the Sun. Why does Vega look so much smaller than the Sun?

a)

It isn't as hot.

b)

It is much farther away.

c)

Its height is much smaller.

d)

It doesn't give off as much light.

13.

A star's _____ and temperature determine a stars brightness.

a)

mass

b)

size

c)

gravity

d)

color

14.

A star’s _____ can tell scientists about its surface temperature.

a)

heat

b)

color

c)

size

d)

radius

15.

The 5 classification of stars are:

a)

size, distance, color, location, brightness

b)

brightness, size, temperature, color, mass

c)

shape, temperature, formation, size, color

d)

mass, size, temperature, color, location

16.

In comparison to other stars in the sky, the Sun appears brighter because it is–

a)

hotter

b)

larger

c)

older

d)

closer

17.

Which of the following observations would provide evidence to support the explanation for why some stars that are larger than the Sun appear to be less bright?

a)

A large campfire seen at a distance of 20 feet is not as bright as a candle that is 5 inches away.

b)

A 100-watt lightbulb is much brighter than a 25-watt bulb, even if both bulbs are exactly the same size.

c)

Most stars are not visible during the day because the brightness of the Sun is much greater.

d)

A flashlight appears dimmer if it is covered with different colored lenses that change the color of the light it gives off.

18.

To look up at the stars is called__.

a)

looking

b)

gazing

c)

observing

d)

staring

19.

The apparent __ is how a star looks from Earth.

a)

light

b)

dimness

c)

distance

d)

brightness

20.

Our sun is a __- sized star.

a)

small

b)

medium

c)

large

d)

extra large

21.

Stars that are far away appear __ even though they might be brighter than our own Sun.

a)

brighter

b)

farther

c)

closer

d)

dimmer

22.

The Sun is the star at the __ of our solar system.

a)

edge

b)

outside

c)

center

d)

distance

23.

The Sun supplies __ and __ to Earth.

a)

light heat

b)

gas light

c)

gas heat

d)

energy gas

24.

The Sun's enormous __ keeps the solar system in orbit.

a)

size

b)

water supply

c)

oxygen

d)

gravity

25.

A star is a giant ball of __ that is found in the center of a solar system.

a)

planet

b)

fire

c)

gas

d)

yellow lemon drops

26.

The __ brightness of a star is how it is perceived by someone on Earth.

a)

actual

b)

apparent

c)

estimated

d)

real

27.

The amount of energy given off by light

a)

luminosity

b)

light

c)

heat

d)

energy

28.

The power to do work

a)

fuel

b)

lifting

c)

homework

d)

energy

29.

__ The closest star to Earth

a)

Sun

b)

moon

c)

Jupiter

d)

Betelgeuse

30.

__ How luminous something appears

a)

light

b)

distance

c)

dim

d)

brightness

31.

A giant ball of gases

a)

planet

b)

Earth

c)

Star

d)

solar system

32.

Stars are held and pulled together by this force.

a)

electrical force

b)

applied force

c)

magnetic force

d)

gravitational force

33.

A star's __ and temperature determine a stars brightness.

a)

mass

b)

color

c)

size

d)

gravity

34.

In comparison to other stars in the sky, the Sun appears brighter because it is __.

a)

closer

b)

bigger

c)

brighter

d)

dimmer

35.

A star’s __ can tell scientists about its surface temperature.

a)

heat

b)

color

c)

size

d)

diameter

36.

The hottest stars appear

a)

yellow

b)

white

c)

blue

d)

red

37.

The coolest stars appear

a)

red

b)

yellow

c)

blue

d)

white

38.

The Sun is a___ _ (color) star in the center of our solar system.

a)

blue

b)

red

c)

yellow

d)

green

39.

The farther away a star is from Earth, the __ it will appear.

a)

cooler

b)

closer

c)

farther

d)

smaller

40.

A star's color is a result of its...

a)

diameter

b)

temperature

c)

Distance from Earth

d)

different gases that make it

41.

A star that is very far away from Earth will appear __________ than a star that is closer to Earth.

a)

more blue

b)

more red

c)

brighter

d)

dimmer

42.

Our Sun is a ______________ -sized star

a)

giant

b)

smaller

c)

medium

d)

Super giant

43.

A light-year is a measure of _______________

a)

distance

b)

time

c)

volume

d)

speed

44.

1 Light-Year is approximately equal to ________________ miles

a)

6 million

b)

6 trillion

c)

6 hundred thousand

d)

6 billion

45.

How bright a star appears to us on Earth is known as __________

a)

absolute brightness

b)

partial brightness

c)

approximate brightness

d)

apparent brightness

46.

How bright a star actually shines is known as __________

a)

absolute brightness

b)

partial brightness

c)

approximate brightness

d)

apparent brightness

47.

A star is a ball of gas, that produces its own ________ and _______

a)

light and wind

b)

heat and mass

c)

light and heat

d)

speed and light

48.

_______________ means anything of or related to the Sun

a)

Solar

b)

Lunar

c)

Celestial

d)

Cosmic

49.

The hottest stars are ______________

a)

rainbow

b)

green

c)

red

d)

blue

50.

The coolest stars are _____________

a)

clear

b)

green

c)

red

d)

blue

51.

To an observer, the Moon is the brightest object in the night sky

a)

TRUE

b)

FALSE

52.

The Sun is so bright because it is a Super Giant star

a)

TRUE

b)

FALSE

53.

Scientists measure star distance in miles because they are shorter than kilometers.

a)

TRUE

b)

FALSE

54.

If 1 light-year equals 6 trillion miles, then 1.5 light-years would be approximately equal to...

a)

3 trillion miles

b)

9 trillion miles

c)

6 trillion miles

d)

12 trillion miles

55.

Choose the brightest object in the sky after Sun and moon in the sky.

a)

Saturn

b)

Mars

c)

Venus

d)

Mercury

56.

Which was the first planet to be discovered by using telescope?

a)

Mars

b)

Jupiter

c)

Saturn

d)

Mercury

57.

The hottest star shines with a ___light

a)

Yellowish-white

b)

Whitish-blue

c)

Yellowish-blue

d)

Whitish-yellow

58.

The constellation visible in spring

a)

Cassiopeia

b)

Orion

c)

Ursa Minor

d)

Great bear

59.

Pole star is present in ___________hemisphere

a)

North

b)

South

c)

East

d)

West

60.

The constellation Scorpius can be seen in the sky during ________evenings.

a)

Winter

b)

Spring

c)

Summer

d)

Autumn

61.

Which of the following represents the pattern formed by some stars in the sky

a)

Meteors

b)

Meteorites

c)

Constellations

d)

Wandering stars

62.

The planet that can be sometimes seen in the evening sky, even with unaided eye, is _______

a)

Uranus

b)

Saturn

c)

Neptune

d)

Mercury

63.

The two stars, at the top of Ursa Major, are called

a)

Big Dipper

b)

Polestar

c)

Pointers

d)

Small Dipper

64.

The Cassiopeia is ______

a)

A bright group of stars in the sky

b)

An artificial satellite

c)

The name given to a spacecraft.

d)

A constellation visible in autumn.

65.

From the following, the object in the sky, that(apparently) moves least in a given time is_______

a)

Moon

b)

Sun

c)

Venus

d)

North Star

66.

The brightest planet in the night sky is ______

a)

Neptune

b)

Mars

c)

Venus

d)

Jupiter

67.

On closely observing some bright stars, for some hours, one finds that stars appear to move from______

a)

West to east

b)

East to west

c)

South to north

d)

North to south

68.

Which constellation is also known as great hunter

a)

Orion

b)

Cassiopeia

c)

Ursa Major

d)

Scorpius

69.

Which of the following lies almost along the axis of rotation of the earth

a)

Ursa Major

b)

Ursa Minor

c)

Pole Star

d)

None of these

70.

Planets appear like tiny disc because

a)

Planets are far from us as compared to stars

b)

Planets are closer to us as compared to stars

c)

Both planets and stars are placed same distance from us

d)

None of these

71.

Due to revolution and rotation of the Earth, a star appears to rise ______ everyday.

a)

1 Minutes

b)

2 Minutes

c)

3 Minutes

d)

4 Minutes

72.

Due to revolution of earth around the sun, a set of stars in the sky after every _____

a)

4 months

b)

6 months

c)

8 months

d)

None of these

73.

According to the ancient people the planets are also known as

a)

Meteor

b)

Meteorite

c)

Wandering stars

d)

All the above

74.

Stars vary in ____

a)

Size

b)

Brightness

c)

Temperature

d)

All of these

75.

To use the senses to examine or inspect

a)

the moon

b)

observe

c)

data

d)

conclusion

76.

The star at the center of the solar system that supplies heat and light to Earth

a)

sun

b)

star

c)

the moon

d)

mars

77.

The brightness of a star perceived by an observer on Earth

a)

brightness

b)

light

c)

sunlight

d)

apparent brightness

78.

A ball of gas in space that produces its own light and heat

a)

star

b)

sun

c)

moon

d)

light year

79.

how far from one point to another point

a)

distance

b)

space

c)

light year

d)

air

80.

How many light years is the sun from earth?

a)

1

b)

2

c)

3

d)

0

81.

What does the sun provide us

a)

heat and light

b)

fun days

c)

air

d)

plants

82.

Why do stars look small compared to the sun

a)

They did not grow

b)

they aren't stars

c)

they are small

d)

The sun is closer to us

83.

How long is a light year

a)

6 trillion inches

b)

6 trillion miles

c)

5 million miles

d)

800 centimeters

84.

The distance light travels in a year

a)

day

b)

night

c)

apparent brightness

d)

light year

85.

How many stars are closer to the earth than the sun?

a)

0

b)

1

c)

2

d)

5

86.

There is a candle that is only 2 inches away from your face. There is a large fire a mile away from you. Which one will look brighter?

a)

fire

b)

candle

c)

neither

d)

both

87.

The ________________ a star is from earth the dimmer it appears.

a)

further

b)

closer

c)

bigger

d)

taller

88.

In comparison to other stars in the sky, the Sun appears brighter because it is _________.

a)

hotter

b)

larger

c)

older

d)

closer

89.

Data from four different stars is provided in the table.


Based on the information provided, which star will appear the brightest to observers on Earth?

a)

A

b)

B

c)

C

d)

D

90.

One of the closest stars to Earth is Alpha Centauri A. It is larger than the Sun, yet it appears much less bright. Which of the following is the best explanation for this?

a)

The smaller a star is, the more concentrated its energy is, so it appears brighter.

b)

The difference in brightness is due to the difference in relative distance.

c)

Dust in the Earth’s atmosphere absorbs the light of all the stars we see.

d)

As stars get older, the amount of light they give off decreases.

91.

How many of the stars, visible in the night sky, are closer to Earth than the Sun?

a)

All of them

b)

None of them

c)

About half of them

d)

Only one

92.

Which of the following observations would provide evidence to support the explanation for why some stars that are larger than the Sun appear to be less bright?

a)

A large campfire seen at a distance of one kilometer is not as bright as a candle that is 50 centimeters away.

b)

A 100-watt lightbulb is much brighter than a 25-watt bulb, even if both bulbs are exactly the same size.

c)

Most stars are not visible during the day because the brightness of the Sun is much greater.

d)

A flashlight appears dimmer if it is covered with different colored lenses that change the color of the light it gives off.

93.

To use the senses to examine or inspect

a)

sun

b)

star

c)

apparent brightness

d)

observe

94.

The star at the center of the solar system that supplies heat and light to Earth

a)

sun

b)

star

c)

apparent brightness

d)

observe

95.

The brightness of a star perceived by an observer on Earth

a)

sun

b)

star

c)

apparent brightness

d)

observe

96.

A star’s ______ is one characteristic that determines how bright it to us.

a)

size

b)

appears

c)

closer

d)

farther

97.

A star’s size is one characteristic that determines how bright it _________to us.

a)

appears

b)

size

c)

farther

d)

closer

98.

Another characteristic is the _____________ between the star and Earth.

a)

distance

b)

appears

c)

closer

d)

farther

99.

The __________ a star is from Earth, the dimmer it will appear.

a)

farther

b)

closer

100.

Why does the Sun appear so bright?

a)

Because it is the closest star to Earth. Other stars appear to be dim in comparison because they are farther away.

b)

Because the Sun is the biggest star in the galaxy. Other stars appear to be dim in comparison because they are not as big.

c)

Because the sun is really hot. Other stars appear to be dim in comparison because they are cooler.

101.

Identify the forms of energy that the Sun provides to Earth.

a)

electrical and mechanical

b)

heat and light

c)

night and day

102.

We know our Sun is a star. Why do we see other stars as only tiny specks in the sky?

a)

The other stars are smaller than out Sun.

b)

The other stars are are not suns.

c)

The Sun is much closer to Earth than the other stars that we see as specks.

103.

What characteristic affects how bright a star appears to us?

a)

distance

b)

temperature

c)

size

104.

What is "distance from the center of a sphere to it's surface"?

a)

stars

b)

radus

c)

star wheel

d)

star clock

105.

What is "distance from the center of a sphere to it's surface"?

a)

stars

b)

radus

c)

star wheel

d)

star clock

106.

What is "uses stars to tell time"?

a)

star clock

b)

star wheel

c)

star map

d)

radius

107.

What is "map of the night sky"?

a)

star wheel

b)

star

c)

light year

d)

star map

108.

What is " distance light travels in a year"?

a)

light year

b)

star map

c)

location

d)

star

109.

What is "object made of hot gases and produces light"?

a)

star wheel

b)

radius

c)

light year

d)

star

110.

What is "used to navigate the night sky"?

a)

star map

b)

light year

c)

star wheel

d)

color

111.

What is "amount of light given off by a star"?

a)

star clock

b)

luminosity

c)

light year

d)

radius

112.

The____ is the most closest star to Earth.

a)

Sun

b)

Betelgeuse

c)

VY Majors

d)

Moon

113.

A blue star is the____.

a)

coolest

b)

hottest

c)

middle

d)

very very cold

114.

A red star is the____.

a)

hottest

b)

middle

c)

coolest

d)

very very cold

115.

To look up at the stars is called__.

a)

gazing

b)

looking

c)

star looking

d)

looking at the sky

116.

The apparent __ is how a star looks from Earth.

a)

dimmer

b)

closer

c)

brightness

d)

farther

117.

Our sun is a __- sized star.

a)

small

b)

medium

c)

large

d)

extra small

118.

Stars that are far away appear __ even though they might be brighter than our own Sun.

a)

brighter

b)

farther

c)

closer

d)

dimmer

119.

The Sun supplies __ and __ to Earth.

a)

light and heat

b)

gas and light

c)

gas and heat

d)

energy and gas

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