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WorksheetsAstronomy Unit Test
Total questions: 56
Worksheet time: 55mins
If the Earth rotated slower, how would that affect the length of the day?
longer day
shorter day
same time, 24 hours
longer year
If Earth revolved (revolution) more slowly, what would happen?
Years would be longer.
Years would be shorter.
Summer would be longer.
Winter would be shorter.
How many days are in a moon's cycle?
24
29 1/2
365
365 1/2
What does waxing mean when describing our moon?
Getting larger
Getting smaller
What does waning mean when describing our moon?
Getting larger
Getting smaller
What affects the strength of gravity
Weight and Mass
Mass and Distance
Distance and Weight
Mass and Force
What is the Big Bang Theory?
Two giant stars hit each other and exploded.
The universe started as a hot, dense point in space that is rapidly expanding.
The universe got too big, exploded, and started over.
None of the above
What are Galaxies made of?
Stars, gases, and space dust
Suns and planets
Dust and gases
Gravity
What type of galaxy is this?
Elliptical
Spiral
Irregular
Conical
What type of galaxy is this?
Elliptical
Spiral
Irregular
Conical
What galaxy do we live in?
Andromeda
Milky Way
Tuffle
Ceres
Most scientists believe the Big Bang Theory explains which of the following questions?
How our planets and moons formed
How our universe began
How the sun turns hydrogen into helium
How fast light travels through space
Gravity is responsible for which of the following characteristics of a galaxy?
The motion of the objects within it
The size of its largest stars
Its location within the universe
The color of light it emits
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction
meteor
galaxy
constellation
solar system
All existing matter and space considered as a whole is called what?
Galaxy
Planet
Universe
Milky Way
consists of the sun and all the objects that revolve around it
solar system
universe
planet
moon
What were the main components involved in the formation of the solar system?
Dust only
Gas only
Dust and gas on their own
Gravity only
Dust and gas pulled together by gravity
Earth and its solar system are a part of which of the following galaxies?
NG-137
Messier 63
Andromeda
Milky Way
About how long ago was the universe formed?
About 13.7 billion years ago
About 17.3 billion years ago
About 4.6 billion years ago
About 6.4 billion years ago
What is the correct order for the formation of our solar system?
1,2,3,4
2,3,4,1
2,4,3,1
1,3,4,2
As the distance between two objects
increases, the gravity between them
increases
decreases
stays the same
is zero
What force played a major role in the formation of the solar system?
Magnetism
Push
Pull
Gravity
Which of the following best describes the formation of the solar system?
The sun ejected rocky material which later went on to form the planets.
A rotating disk of gas and dust was drawn together by the force of gravity.
One very large planetary body broke apart into several smaller planets.
Several stars of different masses cooled and formed the planets and the sun.
Students are making a model of planetary motion. The students tie a tennis ball to a string. The string passes through a spool and is attached to a 1 kilogram mass.
The mass pulls down on the string as the students spin the tennis ball around the spool. If the students wish to change the model to show what would happen if the sun had a greater gravitational pull, what change should they make?
Spin the tennis ball at an increased speed
Replace the 1 kg mass with a 2 kg mass
Tie the tennis ball with a longer string
Change the spool to a longer one
Which of the following is a complete list of the inner planets?
Venus, Earth, Mars, Jupiter
Mercury, Venus, Earth, Mars
Jupiter, Saturn, Uranus, Neptune
Mercury, Venus, Earth, Jupiter
Which of the following is a complete list of the gas giant planets?
Venus, Earth, Mars, Jupiter
Mercury, Venus, Earth, Mars
Jupiter, Saturn, Uranus, Neptune
Mercury, Venus, Earth, Jupiter
The orbits of the objects in the solar system are the direct result of which of the following feature of the Sun?
Its magnetic field
Its brightness
Its gravitational pull
Its chemical composition
If someone is building a scale model of our solar system which characteristic would be the most difficult to build into the model?
The relative sizes of the objects
The colors of the objects
The distances between objects
The composition of the objects
The force of gravitational attraction between the Sun and Venus could be increased by reducing which of the following?
The period of rotation of the Sun
The distance between the Sun and Venus
The speed of the orbit of Venus
The colors of the Sun and Venus
A large object orbiting a star
Planet
Moon
Asteroids
Sun
Comet
A star that is dense and made up of hot gases
Planet
Moon
Asteroids
Sun
Comet
What holds celestial objects in orbit?
Centripetal Force
Gravity
Mass
Luck
How can you tell the difference between moons and planets?
moons are smaller than planets
planets have life, moons do not
planets orbit around stars, moons orbit around planets
planets have rings
Order from smallest to largest:
planet, solar system, galaxy, universe
universe, galaxy, solar system, planet
planet, galaxy, solar system, universe
planet, solar system, galaxy, universe
What is the area in the outer edge of our solar system beyond Neptune called? Dwarf planets such as Pluto orbit in this area of our solar system.
Ganymede
Asteroid Belt
Astronomical Zone
Kuiper Belt
For many centuries, most people believed all celestial objects such as stars and the sun revolved around Earth. But we NOW know this is wrong, NOT TRUE. The theory that is TRUE today is called what?
Geocentric Theory
Heliocentric Theory
Center Theory
Celestial Theory
Why is Pluto not a planet?
It is not in orbit around the sun and acts more like a comet than a planet.
It doesn't have a nearly-spherical shape.
It has not cleared the neighborhood around its orbit of smaller objects. Gravity not strong enough to accomplish this task.
It doesn't have any moons which is needed to be considered a planet.
What word is used to describe the time it takes an object to orbit around the Sun?
Revolution
Rotation
Spin
Turn
______ contains 99.8% of the mass in our solar system.
Jupiter and Saturn
The Sun
All the planets combined
All the planets, asteroids and comets combined
How many stars are in our solar system?
1
1,000
1 million
Over 1 billion
How many stars are estimated to be in the Milky Way galaxy?
1
1,000
1 million
Over 2 billion
Why is making a model of the solar system difficult?
Don't have the right materials
The solar system is so big and the objects in it are so small in comparison
There are too many parts in a model
Because the science concepts are too difficult
