Earth
This is the largest ocean on Earth.
Pacific Ocean
This is the planet closest to the Sun.
What is Mercury
This organ pumps blood throughout your body.
The heart
What is 12 × 12?
144
This animal has three hearts.
An octopus
his natural disaster is measured using the Richter or moment magnitude scale.
An earthquake
This is the largest planet in our solar system.
Jupiter
Plants take in this gas during photosynthesis.
The nucleus
A triangle has angles of 45° and 65°. What is the third angle?
70°
This animal can sleep while one half of its brain remains awake.
A dolphin
This is the layer of Earth directly beneath the crust.
The mantle
This galaxy contains our solar system.
The Milky Way
This part of the cell contains DNA and acts like the cell's control center.
The nucleus
What is 20% of 250?
50
This animal's fingerprints are so similar to humans' that they can sometimes be mistaken for them.
A koala
This process occurs when water vapor cools and turns into tiny liquid droplets, helping form clouds.
Condensation
A year on this planet is shorter than a day on the same planet.
Venus
This is the chemical symbol for gold.
Au
If x^2 = 81, what are the possible values of x?
9 and -9
This sea creature can regenerate lost arms and, in some cases, parts of its body.
A starfish
This famous waterfall system sits on the border between the United States and Canada.
Niagara Falls
This is the name for a star that suddenly becomes extremely bright because of a massive explosion.
A supernova
This type of bond occurs when atoms share electrons.
A covalent bond
A shirt originally costs $80 and is 25% off. What is the sale price?
$60
This microscopic animal is famous for being able to survive extreme conditions such as intense radiation, extreme temperatures, and the vacuum of space.
A tardigrade