Back to marketplace

Lesson 5 - Planets

No description yet. This curated deck is ready for daily study.

Total cards: 16•Content version: v3•Public deck•Updated: 8/1/2026

Card preview (16)

#1
Front (Question)

optimum

Back (Answer)

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

#2
Front (Question)

probe

Back (Answer)

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

#3
Front (Question)

The smallest of all the planets is _____.

Back (Answer)

Mercury

#4
Front (Question)

The only planet with abundant water is _____.

Back (Answer)

Earth

#5
Front (Question)

The planet known as the red planet is _____.

Back (Answer)

Mars

#6
Front (Question)

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

Back (Answer)

Mars

#7
Front (Question)

List the planets from the sun outward.

Back (Answer)

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.

#8
Front (Question)

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

Back (Answer)

Venus

#9
Front (Question)

The largest planet is _____.

Back (Answer)

Jupiter

#10
Front (Question)

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

Back (Answer)

Saturn

#11
Front (Question)

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

Back (Answer)

Jupiter

#12
Front (Question)

The planet _____ was discovered in 1781 by William Herschel.

Back (Answer)

Uranus

#13
Front (Question)

The furthest planet from the sun is _____.

Back (Answer)

Neptune

#14
Front (Question)

The planet _____ rotates on its side.

Back (Answer)

Uranus

#15
Front (Question)

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

Back (Answer)

Jupiter

#16
Front (Question)

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

Back (Answer)

optimum