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Astronomy CFA #3 Review

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Across
Which one of these scientist's laws best clarifies the REASON for planets orbiting a star?
This is the first element a main sequence star will use to create energy.
The force of gravity will ______________ as two objects move farther away from one another.
The sun, being an average yellow star, is expected to live for how many billions of years?
Kepler's First Law states that planets move on ______________orbits with the sun at one focus
What process transfers the energy created by nuclear fusion in the sun’s core to the Earth in the form of electromagnetic energy?
The sum of the distances between each focus and any point on the ellipse is _____________.
Which planet has the fastest orbit?
The number of ______________ on the sun varies in a cycle of ten to eleven years.
Down
The acceleration an object experiences is related to the mass and the force applied to it. This is which of Newton's Laws?
"For every action there is an equal and opposite reaction" is which of Newtons Laws?
This will be the next stage of life our sun will enter in about 5 billion years.
This is the process where gas rises as it heats up, and falls back down as it cools. It is responsible for the transfer of energy in the sun's interior.
The law of ________ ________ says that an imaginary line joining a planet and the sun sweeps out an equal area of space in equal amounts of time.
A person would weigh less on the Moon than on Earth because the moon has less ______________.
The force of gravity will _____________ as the mass of an object increases.
A planet moves ____________ in its orbit when it is closest to the sun.