Grade 6: Solar System

Question 1

Mars is very similar to Earth. Which statement describes a property of Earth, but NOT Mars?

Accepted Answer

abundance of liquid water

Question 2

Which planet would a person weigh the least?

Accepted Answer

Mercury

Question 3

What planet was Galileo observing when he discovered the Galilean moons?

Accepted Answer

Jupiter

Question 4

Which planet would most likely be the coldest?

Accepted Answer

Neptune

Question 5

This planet takes 165 years to complete a single orbit, the longest revolution of any planet?

Accepted Answer

Neptune

Question 6

Scientists observed a rocky, rotation object orbiting in space. It was 250 km wide. It is...

Accepted Answer

an asteroid

Question 7

Which represents characteristics of the four planets farthest from the Sun?

Accepted Answer

gas giants

Question 8

Which represents characteristics of the four planets closest to the sun?

Accepted Answer

rocky (terrestrial planets)

Question 9

Solids that range in size from dust to small rocks, burn in a brief bright display

Accepted Answer

meteors

Question 10

If our solar system lost the sun...

Accepted Answer

planets would travel in a straight line

Question 11

The space shuttle differed from previous space vehicles because it -

Accepted Answer

was reusable

Question 12

"made mostly of ice" fits best under which category?

Accepted Answer

comet

Question 13

All of the planets in our solar system have about the same -

Accepted Answer

shape

Question 14

Which planet has the greatest gravitational force?

Accepted Answer

Jupiter

Question 15

A probe carries instruments, not humans. Where would we most likely send a probe?

Accepted Answer

Saturn

Question 16

The planets ______ around the Sun, and moons _______ around the planets.

Accepted Answer

revolve, revolve

Questions 16