Describe the motion of objects in the universe
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Earth Science › Describe the motion of objects in the universe
When examining galaxies outside our own, we notice that they are "red-shifted." This means that these galaxies are moving away from the observer. How does this observation support the Big Bang Theory?
It indicates that the universe is expanding.
It means the Earth is the center of the universe.
It shows that the Earth is spinning.
It suggests our galaxy was the first one to form.
Explanation
The answer is "It indicates that the universe is expanding."
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well.About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Which of the following statements is true?
only planets rotate and revolve
all galaxies rotate in the same direction
objects in the universe rotate and revolve at different speeds
all of these
none of these
Explanation
The answer is "objects in the universe rotate and revolve at different speeds."
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well. About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Which of the following is the primary reason we experience night and day on Earth?
Earth revolves around the sun
Earth rotates
the sun rotates
the sun revolves around Earth
Explanation
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well.About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Scientists think this may be because of the way our universe began.
The shape of a planet's orbit can BEST be described as _________?
elliptical
circular
curved
linear
Explanation
The answer is "elliptical."
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well.About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Which of the following objects orbit around other objects in space?
moons
planets
comets
all of these
none of these
Explanation
The answer is "all of these."
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well.About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Earth's velocity changes as it revolves around the sun. This is primarily because:
As Earth gets closer to the sun in part of its orbit, the force of gravity increases, thus increasing its velocity.
As Earth gets further from the sun in part of its orbit, the force of gravity increases, thus decreasing its velocity.
Earth's velocity changes as it spins.
Earth's velocity is affected greatly by solar winds.
Explanation
The answer is "As Earth gets closer to the sun in part of its orbit, the force of gravity increases, thus increasing its velocity."
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well.About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Which of the following statements is false?
all planets in our solar system revolve around the sun in the same direction
many celestial bodies rotate and revolve in the same directions as objects around them
galaxies are all moving away from each other due to the expansion of the universe
none of these are false
all of these are false
Explanation
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of Uranus and Venus) rotate in the same direction as well. About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Which of these diagrams shows the planet with the LEAST eccentric orbit?
Explanation
The more elliptical or ovular an orbit is, the more eccentric it is.
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well.About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
What type of motion determines the length of a year on any planet?
revolution
rotation
expansion
chirality
Explanation
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well.About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Which of the following answer choices is FALSE?
Moons orbit planets and planets orbit stars.
All planets in our solar system revolve around the sun in the same direction.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year.
Stars, planets, moons, and other objects in space orbit around each other due to dark matter.
Explanation
Stars, planets, moons, and other objects in space orbit around each other due to gravity. This type of motion is called revolution. Many objects in space also spin in place. This motion is called rotation.
One Earth rotation is the length of an Earth day and is the reason we experience night and day. One Earth revolution around the sun is the length of a year. Other planets have different lengths of days and years because they rotate and revolve at different speeds.
All planets in our solar system revolve around the sun in the same direction. Most of them (with the exception of uranus and venus) rotate in the same direction as well.About half of the galaxies in the universe rotate clockwise, and the other half rotate counter clockwise. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.