Our Solar System

Question 1

Objects that are loose collections of ice, dust, and small rocky particles and orbit the sun

Accepted Answer

Comets

Question 2

Neptune is very similar in size and color to

Accepted Answer

Uranus

Question 3

The solar system contains: sun, small objects like comets, asteroids, and

Accepted Answer

nine planets and their moons

Question 4

The sun produces energy by

Accepted Answer

nuclear fusion

Question 5

Which planets have dense, rocky surfaces

Accepted Answer

Mercury, Venus, Earth and Mars

Question 6

Aside from Earth, which inner planet once had liquid water on its surface?

Accepted Answer

Mars

Question 7

Which is the correct scientific notation for the number 70,900?

Accepted Answer

7.09 x 104

Question 8

What is the sixth planet from the sun?

Accepted Answer

Saturn

Question 9

One of the conditions required for life on Earth is

Accepted Answer

liquid water

Question 10

Scientists have discovered that life forms on Earth exist

Accepted Answer

in a very wide range of conditions

Question 11

Venus and Earth are much alike in terms of

Accepted Answer

size and density

Question 12

How many planets are more massive than Earth and do not have solid surfaces

Accepted Answer

4

Question 13

A spherical region of comets that surround our solar system is called the

Accepted Answer

Oort Cloud

Question 14

Which object includes the Photosphere and Corona?

Accepted Answer

Sun

Question 15

What is the fourth planet from the sun?

Accepted Answer

Mars

Question 16

When a meteoroid enters Earth's atmosphere, it produces a streak of light called a(n)

Accepted Answer

meteor

Question 17

Which is the smallest terrestrial planet?

Accepted Answer

Mercury

Question 18

What is distinctive about Jupiter?

Accepted Answer

largest and most massive planet

Question 19

What number is 9.65 x 105 in standard form?

Accepted Answer

965000

Question 20

A chunk of rock or dust in space is called a

Accepted Answer

Meteoroid

Question 21

How many stars are in our solar system?

Accepted Answer

One

Question 22

The asteroid belt is located

Accepted Answer

between Mars and Jupiter

Question 23

What do all of the inner planets have in common?

Accepted Answer

They all are small and have rocky surfaces

Question 24

What do the first four outer planets have in common?

Accepted Answer

larger than Earth, made of hydrogen and helium

Question 25

What shape are the orbits of most comets?

Accepted Answer

long, narrow ellipses

Question 26

Which of the inner planets does NOT show evidence of volcanic activity?

Accepted Answer

Mercury

Question 27

The atmospheres of the gas giants cannot escape because

Accepted Answer

planets have strong gravitational pull

Question 28

Which planet is now considered a dwarf planet?

Accepted Answer

Pluto

Question 29

Scientists think Mars may have one supported life because

Accepted Answer

evidence that liquid water was once present

Question 30

Saturn's rings are made up of mostly

Accepted Answer

chunks of ice and rock

Question 31

Uranus is different from most other planets because it

Accepted Answer

rotates on its side

Our Solar System

Questions 31

Our Solar System

Questions 31