93% of People Can't Crush This General Science Knowledge Quiz. Can You?

Scientists believe that an asteroid impact caused the extinction of the dinosaurs. This is believed to have happened roughly 65 million years ago.

Ocean tides are caused by gravity - specifically, the moon's gravity. Without gravity, there would be no tides... or people for that matter.

Water covers around 70% of the Earth's surface. It is essential for all life.

Sound is made from vibrations. Vibrations create sound waves.

This is false. There are many good bacteria that you need, to stay healthy and survive.

Light travels around 186,000 miles per second in a vacuum. That's pretty fast!

Animals that eat only plants are herbivores. Humans are omnivores, meaning they eat plants and animals.

Bacterial infections are treated with antibiotics. Bacteria are one-celled organisms.

The Mariana Trench is the deepest known point in the world's oceans. The Mariana Trench is in the Pacific Ocean.

This is False. Jupiter has several moons, the largest of which are Europa, Ganymede, Callisto and Io.

Dolly the sheep was the first mammal to be cloned. Dolly was cloned in 1996.

Hydrogen has an atomic number of 1. It is the first element of the Periodic Table.

This is true. Venus spins backward relative to the other planets.

Water can be a solid, liquid or gas. Solid water is called ice, of course.

The largest ocean on Earth is the Pacific. The Atlantic is the second largest ocean.

Someone who studies dinosaurs is known as a paleontologist. Dinosaurs roamed the earth until about 65 million years ago.

Sound travels faster in water than in air. About four times faster.

Earth is in the Milky Way galaxy. The Milky Way looks like a flattened spiral.

Mushrooms are a type of fungus. So are mold and yeast.

Colds are viruses. They cannot be treated with antibiotics.

Charles Darwin developed the idea of natural selection. This is also known as survival of the fittest.

Venus is the hottest planet in the solar system. The planet's average surface temp is about 460 degrees Celsius.

The fastest land animal in the world is the cheetah.

The process that involves plants using energy from sunlight is called photosynthesis. Plants convert carbon dioxide into food.

Humans breathe out carbon dioxide. Its chemical formula is CO2.

Fossilized tree resin is called amber. Amber sometimes traps bugs and plants as it hardens.

The United States has more tornadoes than any other country in the world. We get about 1,200 of them a year.

Halley's Comet was last seen in the inner Solar System in 1986. Catch it again in 2061.

The longest river in the U.S. is the Missouri River. The Missouri is slightly longer than the Mississippi River.

Water is made up of two elements, hydrogen and oxygen. Water has two hydrogen atoms and one oxygen atom.

The largest land mammals on Earth are elephants. There are two types of elephants - Asian and African.

Helium is the gas used in balloons that float. Helium floats because it is lighter than air.

The word dinosaur comes from a Greek word for "fearfully great lizard."

This is false. Jupiter, Uranus and Neptune also have rings.

The largest living structure on Earth is the Great Barrier Reef. It is located in Australia.