# Can You Pass This High School General Science Quiz?

By: Becky Stigall
2 min
Image: Shutterstock

Although not always a favorite subject, most people take at least one general science class in high school. Take this quiz to find out how much you remember.
The Earth spins at a rate of how many miles per hour?
10
100
1,000
10,000

In addition to spinning in place at 1,000 mph, the Earth hurtles around the sun at about 67,000 mph.

Recycling paper not only saves trees, it saves ______.
Energy
Grass
Cows
Cars

It takes about 70 percent less energy to make paper from recycled paper than it does to make paper from trees.

How fast is the speed of light?
186 miles per second.
18,600 miles per second.
1,860 miles per second.
186,000 miles per second

The speed of light, simply put for those of us here in the United States, is 186,000 miles per second. Technically, though, it's 299,792,458 meters per second, which equates to 186,287.49 miles per second.

Which planet is the hottest in the solar system?
Mars
Mercury
Venus
Pluto

Venus is the hottest planet, with an average surface temperature of over 700 degrees Fahrenheit.

What was the name of the first American space station?
Startreck
Starward
Skylab
Skytrek

Skylab was in orbit from 1973 to 1979. It fell to Earth in 1979, with the odds of hitting an actual person at a predicted 152 to 1.

How many bones are there in the human body?
106
206
306
406

Children have 300 bones. Some bones fuse together as they grow.

If you were a flea, how high could you jump?
78 ft.
480 ft.
1,780 ft.
2,780 ft.

Fleas can jump 80 times higher than their height. So, if you were a six-foot-tall flea, you'd be able to jump about 480 feet straight up.

Which of the following creatures is a true carnivore?
Turtle
Human
Llama
Snake

Because snakes only eat meat, not plant material, they are true carnivores.

Who invented the telephone?
Alexander Graham Bell
George Washington
Nicola Tesla
Charles Darwin

Alexander Graham Bell was also the founder of American Telephone and Telegraph Company (AT&T). Blame him if your phone bill is too high.

Where in the human body is the smallest bone located?
Finger
Ear
Leg
Spine

The smallest bone in the human body is the stapes, or stirrup bone, which is located in the ear.

Which planet, if placed in water, would float?
Saturn
Earth
Venus
Pluto

Even though Saturn is the second-largest planet in the solar system, it's made up of gas. That means it would float if placed in a (VERY) large body of water.

What animal can produce the loudest sound?
Crying baby
Whale
Lion
Turtle

The blue whale can makes sounds as loud as 188 decibels. These sounds can be heard up to 530 miles away.

Which lake is the largest man-made lake in the U.S.?
Lake Erie
Lake Michigan
Lake Tahoe

Lake Mead, in Arizona, was formed by the Hoover Dam and supplies water to Arizona, California and Nevada.

What animal is the most poisonous in the world?
Poison dart frog
Cobra
Black widow spider
Camel

The poison dart frog, found in central and south America, is on the endangered species list. It doesn't make a good pet!

Some dinosaurs had brains the size of a ______.
ant
poppy seed
grain of salt
walnut

The stegosaurus had a brain the size of a walnut even though it was over 30 feet long. It didn't read much.

Where is the largest meteor crater located?
Arizona
London
Brazil
Australia

The largest meteor crater is in Winslow, Arizona. The crater measures 4,150 ft across and 150 ft deep.

How many times does the human eye blink per year?
4,200
4,000
200,000
4,200,000

That's a lot of blinking. No wonder we're always tired.

How long does it take food to digest?
1 hour
8 hours
12 hours
24 hours

It can actually take as long as 50 hours for your dinner to leave your body ... so to speak.

Human jaw muscles exert a force of _____ psi.
200
400
600
800

Compared to other mammals, we're pretty weak. A hippopotamus' jaw exerts 1,800 psi.

A large amount of body heat is lost through the ____.
eyes
mouth
neck

About 40-50 percent of your body heat escapes via the top of your body. Heat rises, so wear a hat.

How much does the Hubble Space Telescope weigh?
10 tons
12 tons
20 tons
35 tons

In addition to weighing in at 12 tons, the Hubble Space Telescope is 43 ft long and cost a whopping \$2.1 billion to build.

What creature has the biggest eye?
Human
Hippo
Atlantic giant squid
Blue whale

The Atlantic giant squid has eyeballs that are bigger than a dinner plate at up to a whopping 15 inches. You should see its sunglasses.

How much does the average human brain weigh?
3.3 pounds
5 pounds
15.1 pounds
25 pounds

The average human brain weighs in at just over three pounds. The largest human brain ever weighed belonged to a 30-year-old male and was a whopping 5 lb., 1.1 oz.

Crickets have ears on their ____.
legs
eyes
tails

Cricket ears are located on the front of each tibia (leg bone) just under the knees. This can make dancing an ear-splitting experience.

Does sound travel faster in water or in air?
Water
Air

Sound travels about four times faster in water because water molecules are closer together. However, sound is easier to start in air.

Approximately how many lightning bolts strike the Earth per second?
1
10
100
1,000

About 100 lightning bolts strike somewhere on Earth every second. These strikes lead to the deaths of approximately 1,000 people per year.

If you wanted to plant your Indian Lotus Tree seeds one century from today, would it germinate?
Yes
No

Indian Lotus Tree seeds remain viable for as long as 400 years, so give it a try. Or, have your grandchildren do so.

A car traveling at 80 mph uses most of its fuel to combat what force?
Weight
Wind
Size
Combustion

About half of a car's fuel, if the car is traveling about 80 mph, is used to combat wind resistance. Sails are not recommended.

Diamonds contain what element?
Boron
Manganese
Salt
Carbon

Although most substances contain carbon, white diamonds are unique because they are all carbon. Colored diamonds may contain other elements.

Which is greater?
The Earth's equatorial circumference
The Earth's polar circumference

The Earth's equatorial circumference is 40,075 km. The Earth's polar circumference is 40,008 km.

Which of the following forces affect the Earth's tides?
Moon
Sun
Rotation
All of the above

The sun, moon, and the rotation of the earth all combine to form the gravitational feces that affect tides.

What is the hardest substance known to man?
Butter
Salt
Cement
Diamonds

Less pure stones are not as hard as more pure diamonds. They will scratch glass easily.

What is the most abundant element in the Earth's crust?
Carbon
Oxygen
Helium
Dirt

The second most abundant element in the Earth's crust is silicon. Pizza is a close third.

How hot is a bolt of lightning?
540 degrees Fahrenheit
5,400 degrees Fahrenheit
54,000 degrees Fahrenheit
540,000 degrees Fahrenheit

A bolt of lightning is 54,000 degrees Fahrenheit. That's six times hotter than the surface of the sun.

What is the most abundant element in the universe?
Oxygen
Hydrogen
Carbon
Boron