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Gravity Assessment Review
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Let's say an asteroid is floating equal distance between Neptune and a black hole. Which way would the asteroid gravitate towards?
Black hole
What is the minimum speed required to escape a planet's gravitational pull?
Escape Velocity
Which bends space more? Higher mass objects or lower mass objects?
Higher Mass
Einstein claimed that space is like ____________________ (Theory of Relativity)
A sheet of fabric
Why are asteroids not a perfect sphere?
They do not have enough mass to squish them into a sphere by gravity
The nebular hypothesis is the theory of how the _____________ formed
Solar System
What is the last stage of the formation of the universe - where the force of gravity attracts more and more materials, going faster and faster (Vocab Word)
Accretion
How many mm (millimeters) in ONE cm (centimeter)
10 mm
What is stage 3 to formation of a universe?
Protoplanets form
The force by which a planet or other object draws objects near it
Gravity
True or False: Space Bends due to objects with mass
True
The distance light can travel in 1 earth year
Light Year
Why don't the planets orbit in a circle?
An ellipse causes BALANCE. (Everything is trying to find balance in space)
Which has the most gravity? An asteroid, a planet, a sun/star, a black hole?
Black hole
What was Einstein's theory called about space being like a sheet of fabric?
Theory of Relativity
Why does the moon orbit the Earth and not the Sun?
It is closer to Earth's gravitational field
What is stage 2 of the formation of a universe?
A protostar begins to form in the center
What is a cloud of gas and dust that gathers due to gravity? (Stage 1)
Nebula
How many stages are there in the formation of the universe?
4
More mass = ______ gravity
More
Why is everything a sphere in space?
Gravity acting equally on all sides
What shape do the planets orbit in around the sun in our solar system?
Ellipse
Waves transfer ________ not matter
Energy
The distance between the sun and Earth is 1 of these
1 AU
The amount of “stuff” in an object
Mass


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