7th Grade Science Solar System Test Part 1 Review - Intro to Solar system + Inner planets + Asteroids/Comets/Meteoroids

Question 1

Which is INCORRECT about the sun?

Accepted Answer

Is about 7,216 miles wide

Question 2

About how many kilometers is one AU?

Accepted Answer

150 million kilometers

Question 3

Which is a bright streak of light in Earth's atmosphere?

Accepted Answer

Meteor

Question 4

About how many miles is one AU?

Accepted Answer

93 million miles

Question 5

The surface of _?_ has not changed in billions of years becausethere has not been erosion

Accepted Answer

Mercury

Question 6

What is another term used for the inner planets?

Accepted Answer

Terrestrial

Question 7

Which is a small rocky particle usually about the size of a grain of sand?

Accepted Answer

Meteoroid

Question 8

Which of the following is NOT required for an object to be considered a true planet?

Accepted Answer

Has a core of iron and nickel

Question 9

Which planet completely lacks an atmosphere?

Accepted Answer

Mercury

Question 10

Which is a force that keeps planets moving in curved orbits around the sun?

Accepted Answer

Gravity of the sun pulling inward, Forward velocity (inertia) of planets

Question 11

Which is the hottest planet in the solar system?

Accepted Answer

Venus

Question 12

Which planet has the longest day of all the inner planets?

Accepted Answer

Venus

Question 13

One AU is the distance between the sun and this planet...

Accepted Answer

Earth

Question 14

What determines the length of a year on a planet?

Accepted Answer

Period of revolution

Question 15

Which describes the inner planets?

Accepted Answer

Small, rocky

Question 16

Which planet has a deadly atmosphere with 97% carbon dioxide and acid clouds?

Accepted Answer

Venus

Question 17

What determines the length of a day on a planet?

Accepted Answer

Period of rotation

Question 18

A small piece of rock that doesn't all burn up in Earth's atmosphere and hits the surface is...

Accepted Answer

Meteroite

Question 19

Which describes a planet's period of revolution?

Accepted Answer

Time it takes a planet to orbit the sun once

Question 20

What materials make the mantles of Earth, Mercury, Venus, and Mars?

Accepted Answer

Oxygen and silicon

Question 21

What is a comet?

Accepted Answer

A ball of dust, gas, and ice

Question 22

Valles Marineris, a hugecanyon that would stretch across the US is on this planet...

Accepted Answer

Mars

Question 23

Which object is spherical and about 1.4 million kilometers (870,00 miles) in diameter?

Accepted Answer

Sun

Question 24

Which is the smallest planet in the solar system?

Accepted Answer

Mercury

Question 25

What materials make the cores of Earth, Mercury, Venus, and Mars?

Accepted Answer

Iron and nickel

Question 26

Which is CORRECT about the asteroid belt?

Accepted Answer

Located between the inner and outer planets

Question 27

Which is a 1 m to 100 km sized oddly shaped rock?

Accepted Answer

Asteroid

Question 28

Which describes a planet's period of rotation?

Accepted Answer

Time it takes a planet to rotate once on its axis

Question 29

Why is Mars called the red planet?

Accepted Answer

Iron oxide in the soil

Question 30

What shape are the orbits of planets?

Accepted Answer

Elliptical

7th Grade Science Solar System Test Part 1 Review - Intro to Solar system + Inner planets + Asteroids/Comets/Meteoroids

Questions 30

7th Grade Science Solar System Test Part 1 Review - Intro to Solar system + Inner planets + Asteroids/Comets/Meteoroids

Questions 30