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SciOly Astronomy Trials

Total questions: 82

Worksheet time: 1hrs 19mins

Name
Class
Date
1.
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
2.
Which category is our Sun located in?
a)
White Dwarfs
b)
Supergiants
c)
Main Sequence
d)
Giants
3.
The category that contains the most stars is...
a)
Main Sequence
b)
Supergiants
c)
Giants
4.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
5.
Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?
a)
Betelguse
b)
Sirius B
c)
Procyon B
d)
Barnard's star
6.
Which spectral class does our star, the sun, belong to?
a)
M
b)
K
c)
G
d)
F
7.
A wave with a large wavelength will have a ______ frequency and _____ energy
a)
high, low
b)
high, high
c)
low, high
d)
low, low
8.
Select the correct order of waves on the EMS 
a)
Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
b)
Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
c)
Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
d)
Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma
9.
Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy
a)
Radio waves
b)
Ultraviolet Rays
c)
Gamma Rays
d)
X-rays
10.
Put the visible light colors in order from longest wavelength to shortest wavelength
a)
Violet, Indigo, Blue, Green, Orange, Yellow, Red
b)
Red, Yellow, Green, Orange, Violet, Blue, Indigo
c)
Red, Orange, Yellow, Green, Blue, Indigo, Violet
11.
Which of the following electromagnetic waves is given off as heat? 
a)
Radio Waves
b)
Infrared Rays
c)
Visible Light
d)
Gamma Rays
12.
The _______________ determines the color of visible light. 
a)
wavelength
b)
speed
c)
amplitude
d)
light
13.
Which of the following electromagnetic waves has the lowest energy?
a)
gamma ray
b)
infrared wave
c)
visible light wave
d)
microwave
14.
As the frequency of an electromagnetic wave increases, the amount of energy in that wave...
a)
increases.
b)
decreases.
c)
stays the same.
15.
Which of the following has the longest wavelength?
a)
microwaves
b)
visible light
c)
x-rays
d)
infrared waves
16.
All electromagnetic waves have the same...
a)
frequency
b)
speed
c)
wavelength
d)
energy
17.
The height of the wave is known as the _____________.
a)
amplitude
b)
crest
c)
trough
d)
wavelength
18.
The energy from the sun is created by a process called:
a)
nuclear fission
b)
nuclear fusion
c)
nuclear reaction
d)
nuclear core
19.
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
20.
Light travels in ....
a)
Longitudinal Waves
b)
Transverse Waves
21.
Why does an apple appear red?
a)
All colors are absorbed & none are reflected
b)
All colors are absorbed except for blue, which is reflected
c)
All colors are reflected and none are absorbed
d)
All colors are absorbed except for red, which is reflected
22.
Which color reflects the least light?
a)
Black
b)
White 
c)
Blue
d)
Red
23.
Sunlight is
a)
not light at all
b)
red light
c)
yellow light
d)
white light
24.
Humans can see colors because of these photo receptor cells in the Retina called 
a)
rods
b)
optic cells
c)
cones
d)
sclera
25.
Objects that reflect ALL colors will appear _____?
a)
Black
b)
White
c)
Gray
d)
Multi-colored
26.
Objects that ABSORB all colors of light will appear _______.
a)
white
b)
black
c)
multi-colored
d)
gray
27.

A hot metal radiates strongly at wavelength 600 nm. What is the temperature of the metal?

a)

2138 K

b)

4830K

c)

4230 K

d)

1290 K

28.

The energy produced by green light of wavelength 500 nm is

a)

1.00 x 10-10 J

b)

1.10 x 10-14 J

c)

3.98 x 10-19 J

d)

4.42 x 10-36J

29.

Which of the following statements is NOT TRUE concerning a blackbody

a)

It absorbs radiation of all wavelengths that fall on it

b)

It is a best emitter radiation

c)

It's radiation is also known as cavity radiation

d)

It reflects some radiation that falls on it

30.

A sun of radius 7.0 x 108 m and a surface temperature of 5800 K is assumed to be a blackbody. What is the rate of energy radiated by the sun?

a)

3.95 x 1026 W

b)

9.90 x 1025 W

c)

3.00 x 1015 W

d)

3.14 x 1025 W

31.

Choose the correct statement of an ideal blackbody

a)

Emits 100% of the light it generates, but cannot absorb its own radiation

b)

Absorbs half of the light incident upon it and emits half of the radiation it generates

c)

Absorbs all light incident on it, or emits all of the radiation it generates

d)

Absorbs 100% of the light incident upon it, but cannot emit light of its own

32.

For a perfect blackbody, the peak radiation intensity emitted by the body is

a)

dependent on the radiation that falls on the blackbody

b)

characteristic of the temperature of the blackbody

c)

always varying for a given temperature

d)

the same regardless of the temperature of the blackbody

33.

A light source is found to be emitting electromagnetic radiation with a frequency of 1015 Hz. Calculate the temperature of the source

a)

4560 K

b)

6540 K

c)

7320 K

d)

9660 K

34.

The surface of the sun can be treated as a blackbody of temperature about 5800 K. What is the peak-intensity wavelength, λm?

a)

5.0 x 10-3 m

b)

5.0 x 10-5 m

c)

5.0 x 10-7 m

d)

5.0 x 10-9 m

35.

Choose the correct statement for photon

a)

Photon is a quantum of electromagnetic wave

b)

Photon is a particle with a positive charge

c)

Photon is a particle with a negative charge

d)

Photon is the electron produced when light is incident on a metal's surface

36.

Identify the physical phenomena that cannot be described by the wave theory of light

a)

Diffraction

b)

Polarization

c)

Interference

d)

Photoelectric effect

37.

An electron has a deBroglie's wavelength of 2.9 x 10-3 m. Find its speed.

a)

2.3 x 10-3 ms-1

b)

2.5 x 10-1 ms-1

c)

1.4 x 10-4 ms-1

d)

1.6 x 10-3 ms-1

38.
Absolute brightness is
a)
How bright the star is to an observer on Earth
b)
How much energy a star has
c)
How bright a star is if it was located 10 parsecs away
d)
How bright a star is if it was located 10 light years away
39.
Apparent brightness is
a)
How bright the star is to an observer on Earth
b)
How much energy a star has
c)
How bright a star is if it was located 10 parsecs away
d)
How bright a star is if it was located 10 light years away
40.
Luminosity is
a)
How bright the star is to an observer on Earth
b)
How much energy a star has
c)
How bright a star is if it was located 10 parsecs away
d)
How bright a star is if it was located 10 light years away
41.
How are apparent magnitude and absolute magnitude different?
a)
Apparent is how bright it appears, absolute is how bright it actually is
b)
Apparent is how bright it actually is, absolute is how bright it appears
42.
What color is a Class O star
a)
Blue
b)
Yellow
c)
Orange
d)
White
43.
What color is a Class M star
a)
Blue
b)
Yellow
c)
Orange
d)
Red
44.
What color is a Class K star
a)
Blue
b)
Yellow
c)
Orange
d)
Red
45.
What color is a Class B star
a)
Blue
b)
Yellow
c)
Orange
d)
Red
46.
What color is a Class A star
a)
Blue
b)
White
c)
Orange
d)
Red
47.
What color is a Class G star
a)
Blue
b)
White
c)
Orange
d)
Yellow
48.
What class of star is the hottest
a)
Class O and Class B
b)
Class A, F, and G
c)
Class K
d)
Class M
49.
What class of star is the coolest
a)
Class O and Class B
b)
Class A, F, and G
c)
Class K
d)
Class M
50.
The average distance between the earth and the sun is the 
a)
astronomical unit 
b)
Light year
51.

What is an astronomical unit (A.U.)?

a)

the time it takes light to travel one year

b)

the distance between the Earth and the Moon

c)

the distance between the Earth and the Sun

d)

the distance between the Earth and the Neptune

52.

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.

53.

Which of the following is the largest distance

a)

astronomical unit

b)

parsec

c)

light year

54.

Place the following measurements from smallest to largest.

a)

meter, light year, kilometer, astronomical unit, parsec

b)

meter, kilometer, light year, astronomical unit, parsec

c)

meter, kilometer, astronomical unit, light year, parsec

d)

meter, astronomical unit, kilometer, parsec, light year

e)

meter, kilometer, parsec, astronomical unit, light year

55.

How many miles are in one Astronomical Unit?

a)

100,000,000 million miles

b)

93,000,000 million miles

c)

80,000,000 million miles

d)

47,000,000 million miles

e)

1,000,000 million miles

56.
A good way to practice parallax is with your
a)
Foot
b)
Thumb
c)
Toes 
d)
Head 
57.
The apparent shift in the position of an object when viewed from different locations is called 
a)
Parallelogram 
b)
Sun flare 
c)
Neptunian object 
d)
Parallax 
58.

Which of the following scenarios would be appropriate to use light years?

a)

From the sun to Earth

b)

from Earth to Neptune

c)

from the Milky Way to its closest galaxy

d)

Asteroid Belt to the Kuiper Belt

59.
Why can't scientists use parallax to find long distances?
a)
because parallax decreases at large distances
b)
because parallax increases at large distances
c)
because they can't get starlight from very far away
d)
That's not true, parallax is a great tool for finding far distances
60.
What does the parallax angle measure?
a)
Temperature
b)
Distance
c)
Brightness
d)
Size
61.

This device helped find the latitude by looking at the position of the stars. it is circular and often made of metal.

a)

Compass

b)

Astrolabe

c)

Cross Staff

62.

What is this tool?

a)

Compass

b)

Astrolabe

c)

Cross Staff

63.

What is meant by the term luminosity?

a)

Luminosity is the amount of energy generated in the star as electromagnetic radiation.

b)

Luminosity is how bright a star seems to an observer far away.

c)

Luminosity is the color at which a star burns.

d)

Luminosity is the determinant of whether a star is approaching an observer or receding,

64.

Astronomers use ____________ to find the distance from the Earth to a star.

a)

luminosity

b)

the parallax angle

c)

apparent brightness

d)

light years

65.

Which of the following is the closest star to our Sun?

a)

Sirius

b)

Betelgeuse

c)

Proxima Centauri

d)

Rigel

66.

Other than the Sun, what is the brightest star as viewed from Earth?

a)

Betelgeuse

b)

Venus

c)

Sirius A

d)

Alpha Centauri

67.

According to Kepler, planets orbit in a(n)

a)

ellipse

b)

circle

c)

rectangle

68.

Which of these would be shorter if Earth ROTATED faster?

a)

days

b)

months

c)

years

d)

weeks

69.

Which of these would be shorter if Earth REVOLVED faster?

a)

days

b)

months

c)

years

d)

weeks

70.

What two factors affect GRAVITY?

a)

gravity and inertia

b)

volume and mass

c)

mass and distance

71.

The closer a planet is to the sun,

a)

the slower it will move

b)

the faster it will move

c)

there will be no changes

72.
The theory that explains the formation of the solar system is called ____.
a)
Nebulis Theory
b)
Nebular Theory
c)
Big Bang Theory
d)
Big Nebulan Theory
73.
What caused the nebula to collapse and start spinning?
a)
Supernova
b)
Asteroid collision
c)
Big Bang
d)
Nearby star exploded
74.
How long ago did the solar system begin to form?
a)
5 billion years ago
b)
50 million years ago
c)
5 million years ago
d)
50 billion years ago
75.
When a planet is closest to the sun in it's orbit, it is called ____.
a)
perihelion
b)
aphelion
c)
parahelical
d)
aphahelical
76.
What is the shape of a planet's orbit?
a)
circular
b)
elliptical
c)
spherical
d)
round
77.
Planets that are farther from the sun have larger orbits is Kepler's ___ Law.
a)
1st
b)
2nd
c)
3rd
d)
4th
78.
Line drawn from the sun to planet sweeps out equal areas in equal time is Kepler's _____ Law.
a)
1st
b)
2nd
c)
3rd
d)
4th
79.
Kepler's 2nd Law states that a planet's velocity is ____ when farther from the sun.
a)
fastest
b)
slowest
c)
unchanged
d)
the same
80.

Which of the following lists the scientists in correct chronological order?

a)

Galileo, Copernicus, Kepler, Brahe

b)

Copernicus, Galileo, Kepler, Newton

c)

Kepler, Brahe, Copernicus, Galileo

d)

Newton, Kepler, Copernicus, Brahe

81.

When looking at the Earth's orbit, what can be said about summer and winter in the Northern hemisphere?

a)

Because of its orbit, Earth is the same distance from the Sun in both the Northern hemisphere's summer and winter seasons.

b)

Because of its orbit, Earth is further away from the Sun in the Northern hemisphere's winter season and closer during the summer season.

c)

Because of its orbit, Earth is further away from the Sun in the Northern hemisphere's summer season and closer during the winter season.

d)

None of the above accurately describe the Earth's orbit.

82.

When in orbit around the Earth, what is true about the relationship between a satellite's distance from the Earth's surface and its velocity in order for the satellite to stay in its orbit?

a)

A satellite's distance and velocity are inversely proportional; that is, the satellite must travel more quickly to stay in orbit.

b)

A satellite's distance and velocity are directly proportional; that is, the satellite must travel less quickly to stay in orbit.

c)

A satellite's velocity is not affect by its distance from the Earth's surface.

d)

The distance from the Earth's surface is only dependent upon the mass of the satellite.

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