Astronomy

Question 1

sun produces energy by

Answer 1

Nuclear fusion

Question 2

earth is the only planet to have

Answer 2

a hydrosphere

Question 3

A planet is likely to have several moons if it ___

Answer 3

has greater mass

Question 4

The smallest members of our solar system

Answer 4

meteoroids

Question 5

It takes ___ years for comet Halley to orbit the sun

Answer 5

75-79

Question 6

concerns with the study of the universe and Earth’s place within it.

Answer 6

astronomy

Question 7

is the sun and all the objects that orbit around it.

Answer 7

solar system

Question 8

how was the solar system formed?

Answer 8

nebular hypothesis

Question 9

smallest planet in the solar system and closest to the sun

Answer 9

mercury

Question 10

what are the moons of mars?

Answer 10

Phobos and Deimos

Question 11

earth has a natural satellite named

Answer 11

Luna or Moon

Question 12

a planet that has no moons and the hottest planet

Answer 12

venus

Question 13

only planet in the solar system to spin on its side

Answer 13

uranus

Question 14

biggest planet in the solar system

Answer 14

jupiter

Question 15

saturn’s rings are made of?

Answer 15

icy particles

Question 16

largest moon in our solar system

Answer 16

ganymede

Question 17

coldest planet and the first planet to be predicted on paper

Answer 17

neptune

Question 18

a small, rocky body that orbits the sun

Answer 18

asteroids

Question 19

small object made up of ice and dust

Answer 19

comets

Question 20

is a particle of debris found in the solar system

Answer 20

meteoroid

Question 21

comets and asteroids are referred to as

Answer 21

Near-Earth Objects

Question 22

asteroids come from

Answer 22

main asteroid belt

Question 23

long-period comets come from

Answer 23

oort cloud

Question 24

short period comets come from

Answer 24

kuiper belt

Question 25

when a meteoroid enters the earth's atmosphere

Answer 25

meteor

Question 26

when a meteoroid survives and makes an impact to the ground

Answer 26

meteorite

Question 27

a collection of billions of stars, gas, and dust, all held together by the force gravity

Answer 27

galaxy

Question 28

a spherical structure found in the center of the galaxy

Answer 28

bulge

Question 29

looks like regualar spiral galaxies except that there is a bar-shaped concentration of material near the center with spiral arms attached to the bar

Answer 29

barred spiral

Question 30

most abundant of all the galaxies, sometimes known as dwarf galaxies

Answer 30

elliptical galaxies