The Solar System and the Universe

Question 1

_____ is a planet, an object that moves around a star, has a nearly round shape, and has mostly cleared its path.

Accepted Answer

The Earth

Question 2

____ galaxies do not have a certain shape, stars are random/scattered, and there is a lot of gas/dust to form new stars.

Accepted Answer

irregular

Question 3

_____ is the study of objects in space and their characteristics.

Accepted Answer

astronomy

Question 4

The _____ is tiny when compared in size to the sun. It is visible from Earth because it reflects light from the sun.

Accepted Answer

The Moon

Question 5

___ galaxies are brightest at their center, can be a sphere or flattened, and they are really only made up of old stars.

Accepted Answer

elliptical

Question 6

A _____ is a group of billions of stars, the objects that orbit the stars, gas, and dust.

Accepted Answer

galaxy

Question 7

The path one space object takes around another is called an _____.

Accepted Answer

orbit

Question 8

_____ are small natural objects that revolve around other objects. Many planets have them.

Accepted Answer

moons

Question 9

Red stars are cooler than blue stars.

Accepted Answer

True

Question 10

A _____ is a chunk of frozen gases, rock, ice, and dust.

Accepted Answer

comet

Question 11

The smaller a star is, the brighter it is.

Accepted Answer

False

Question 12

Earth's composition is mainly iron, oxygen, silicon, and magnesium.

Accepted Answer

True

Question 13

_____ are pieces of rock that break off of asteroids and travel through space.

Accepted Answer

meteroids

Question 14

Earth's tilt on its axis has nothing to do with Earth's seasons.

Accepted Answer

False

Question 15

_____ are huge balls of hot, glowing gases that produce their own heat and light.

Accepted Answer

stars

Question 16

_____ galaxies consist of a rotating disk of young stars, gas, and dust and a central bulge made of older stars.

Accepted Answer

spiral

Question 17

Earth is never called the "blue planet" because none of its surface is cover by water.

Accepted Answer

False

Question 18

The universe is everything that exists.

Accepted Answer

True

Question 19

A year is the time it takes for Earth to _____, or go around, the sun.

Accepted Answer

revolve

Question 20

It takes the moon just 27 days to orbit Earth.

Accepted Answer

True

Question 21

Earth's rotation on its axis causes the Day/Night Cycle.

Accepted Answer

True

Question 22

_____ are nearly round bodies whose orbits cross the orbits of other bodies.

Accepted Answer

dwarf planets

Question 23

The sun is composed of and surrounded by hydrogen and helium.

Accepted Answer

True

Question 24

_____ are rock and iron objects that orbit the sun.

Accepted Answer

asteroids

Question 25

The sun is about 109 times larger than Earth.

Accepted Answer

True

Question 26

The _____ is the imaginary line that goes through Earth from pole to pole.

Accepted Answer

axis

Question 27

_____ is a star, which is a huge, hot ball of gases that produces its own light.

Accepted Answer

The Sun

Question 28

It takes Earth 563 days to orbit the sun.

Accepted Answer

False

Question 29

A _____ is made up of a star and the planets and other space objects that revolve around it.

Accepted Answer

solar system

Question 30

_____ are scientists who study space and everything in it.

Accepted Answer

astronomers

Question 31

Earth _____, or spins around its axis, once every 24 hours.

Accepted Answer

rotates

Question 32

_____ galaxies may have two or more spiral arms. Unlike regular spirals, there are young stars at the center of these.

Accepted Answer

barred spiral

Question 33

The outer planets are Jupiter, Saturn, Uranus, and Neptune.

Accepted Answer

True

Question 34

The large, round body at the center of our solar system is _____.

Accepted Answer

the sun

Question 35

The inner planets are Mercury, Venus, Earth, and Mars.

Accepted Answer

True

Question 36

We live in the Milky Way Galaxy.

Accepted Answer

True

Question 37

There are eight _____ in our solar system. All of them rotate, or spin, about an axis.

Accepted Answer

planets

Question 38

Earth and Jupiter are the largest planets in the groups they belong to.

Accepted Answer

True

Question 39

The moon's atmosphere is mainly nitrogen and oxygen.

Accepted Answer

False

Question 40

The inner planets are farther from the sun than the outer planets.

Accepted Answer

False

The Solar System and the Universe

Questions 40

The Solar System and the Universe

Questions 40