Lesson 5 - Planets

Question 1

optimum

Answer 1

the very best possible; that which provides the greatest opportunity for success

Question 2

probe

Answer 2

a spacecraft designed to explore a region or object in space and send back regular reports

Question 3

The smallest of all the planets is _____.

Answer 3

Mercury

Question 4

The only planet with abundant water is _____.

Answer 4

Earth

Question 5

The planet known as the red planet is _____.

Answer 5

Mars

Question 6

Besides Earth, the planet _____ has been studied more than any other planet.

Answer 6

Mars

Question 7

List the planets from the sun outward.

Answer 7

As you are closer to the sun and move outward, the inner planets are: Mercury, Venus, Earth, and Mars. The outer planets are: Jupiter, Saturn, Uranus, and Neptune.

Question 8

The planet _____ has an atmosphere of carbon-dioxide and sulfuric acid.

Answer 8

Venus

Question 9

The largest planet is _____.

Answer 9

Jupiter

Question 10

The most extensive ring system around a planet is that of _____.

Answer 10

Saturn

Question 11

At 63, _____ has the most moons of any planet.

Answer 11

Jupiter

Question 12

The planet _____ was discovered in 1781 by William Herschel.

Answer 12

Uranus

Question 13

The furthest planet from the sun is _____.

Answer 13

Neptune

Question 14

The planet _____ rotates on its side.

Answer 14

Uranus

Question 15

The Great Red Spot is a storm that rages on _____.

Answer 15

Jupiter

Question 16

The definition the very best possible; that which provides the greatest opportunity for success; defines the word:

Answer 16

optimum