astronomy

Question 1

What is the definition of angular velocity?

Answer 1

A change rate of an angle with a type on reference point.

Question 2

What is the definition of parsec?

Answer 2

A unit that astronomers use to describe large distances.

Question 3

What is the definition of constellation?

Answer 3

A grouping of stars in the night sky into a recognize pattern.

Question 4

What is the definition of nebula?

Answer 4

A cloud of gas and dust.

Question 5

What is the definition of light year?

Answer 5

A distance that light goes in 1 year.

Question 6

What is the definition of astronomical unit?

Answer 6

An average distance between the earth and the sun.

Question 7

What is the defintion of planetesimal?

Answer 7

A smal celestial body that is put together to form planets.

Question 8

What is the defintion of protoplanetary?

Answer 8

A large unhatched offspring with protopalnetary discs and it is an internal melting to produce differnt interiors.

Question 9

What is the defintion of nuclear fusion?

Answer 9

A nuclear fusion is when a nuclear reaction combine nuclei to form*** ***massive nuclei and to release energy.

Question 10

Define terrestrial planets.

Answer 10

A planet that has a rocky surface similar to earth.

Question 11

Define gas giant planets.

Answer 11

A plant that is cmposed to alomst entirely gas.

Question 12

Fill in the blank.

comet is consisting of___ and _____.

Answer 12

NUCLEUS OF ICE AND DUST.

Question 13

Define the word asteroid.

Answer 13

A small rocky body orbiting the sun.

Question 14

Define the word cosmologist.

Answer 14

A astronomer that studies relations of the universe.

Question 15

What is a period?

(scientific form)

Answer 15

A period is a portion of time.

Question 16

Revolve moves in what directin on the central axis?

Answer 16

Circular direction.

Question 17

A rotation is the action of rotating around the axis. in what direction is it closes to earth?

a. same directin

b.opoosite direction

c. no where near the the earth.

Answer 17

a. same direction

Question 18

Describe sidereal day.

Answer 18

two consectuive transits

Question 19

Define solar day.

Answer 19

THE TIME BETWEEN TRANSITS OF THE SUN IN PARTICULAR PLACES.

Question 20

HOW MANY DAYS IS IN A YEAR AND DEFINE YEAR .

Answer 20

THERE ARE 365 DAYS IN A YEAR AND A YEAR IS A PERIOD OF TIME STARTING FROM THE FIRST MONTH OF JANUARY UNTIL DECEMBER WHICH IS THE LAST MONTH.

Question 21

Define parsec.

Answer 21

a unit of distance in astronomy.