Astonomy Flashcards

1
Q

What is an astronomical unit?

A

An astronomical unit is the avg distance between the sun and the earth.

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2
Q

What is a light year?

A

The distance light travels in one year.

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3
Q

What is a Nebula?

A

A nebula is a cloud of dust.

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4
Q

What is a constellation?

A

A constellation are a group of stars in the night sky formed in a recognizable pattern.

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5
Q

What is a comet?

A

A comet is a chunck of frozen gasses, ice,and rocky debris that orbits the sun.

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6
Q

What is parsec?

A

A parsec is 3.26 times the number of years.

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7
Q

What is angular velocity?

A

Angular velocity is the rate of change or angular position and an rotating body.

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8
Q

What is an orbit?

A

An orbit is a curved path a celestial space craft around stars.

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9
Q

What is the science related meaning of period mean?

A

A period is a length or period of time.

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10
Q

What is the meaning of revolve?

A

Revolve is moving in a circle on a central axis.

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11
Q

What is rotation?

A

Rotation is the action of rotation around an axis.

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12
Q

What is the meaning of a sidereal day?

A

A sidereal day means the time between two consecutive traits.

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13
Q

What is a solar day?

A

A solar day is the time between two meridian tranists at a particular place.

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14
Q

What is the scientific meaning of planetesimal?

A

A planetesimal is a body that could come together with many other bodies while under gravitation and form another planet.

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15
Q

What is a protoplanetary?

A

A protoplanetary is the colection of matter in which the process of a new planet is formed.

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16
Q

WHat is the meaning of nucluer fusion?

A

Nucluer fusion is a nuclear reaction is an atomic reation in which low atomic numbers fuse into a heavier nuclues with a release of energy.

17
Q

What is a terrestrial plant?

A

A terrestrial planet is a planet that has a rocky surface.

18
Q

What is a gas giant planet?

A

A gas giant planet is a planet made almost entirely out of gas.

19
Q

What is a comet?

A

A comet is celestial object which consist of dust or ice.

20
Q

What is an asteroid?

A

An asteroid is a small rocky body circling the sun.

21
Q

What is a cosmologist?

A

A cosmologists a an expert in charge of the use of cosmetics.