Biology
Earth Sciences
Astronomy
Chemistry
Physics
100

What is it called when plants convert sunlight into energy?

Photosynthesis.

100

What is the largest ocean on Earth?

The Pacific Ocean.

100

What’s the largest planet in our solar system?

 Jupiter.

100

What is the smallest unit of matter called?

An atom.

100

What is the unit for measuring electric power?

Watts.

200

Is a tomato a fruit or a vegetable?

 A fruit. Fruits contain seeds and grow from the flowering part of a plant. A vegetable is an edible part of a plant.

200

What is the largest desert on Earth?

Antarctica. Because it receives less than 6 inches of rain per year, Antarctica counts as a desert. The Sahara Desert is the second largest.

200

Which planets in our solar system are gaseous planets?

 Jupiter, Saturn, Neptune, Uranus.

200

Which is denser, oil or water?

Oil

200

What is the fastest known speed in the universe?

 The speed of light. The speed of light travels at 299,792,458 meters per second.

300

What is the largest mammal on earth?

The blue whale.

300

The mass of the Earth is mostly made up of these two elements.

Oxygen (30%) and Iron (32%).

300

Which planet in our solar system has the most moons?

Saturn. It has 146 moons.

300

 What is the only metal that is a liquid at room temperature?

Mercury (melting point of negative 39.9 degrees Celsius).

300

What color do you get if you mix all colors of light?

White. White objects appear white to our eyes because they reflect back all the visible wavelengths of light that shine on them.

400

What two mammals lay eggs?

The platypus and the echidna

400

What is the world’s largest tree by volume?

The Giant Sequoia.

400

How long does a day on Mercury last?

59 Earth days.

400

What is the range a solution has to be on the pH scale for it to be an acid?

Solutions with a pH between 0-7 are acids. Solutions with a pH between 7-14 are bases.

400

How many volts of electricity can an electric eel produce?

About 800 volts.

500

What is it called when a lizard regrows its tail?

Epimorphic regeneration.

500

 Which country has the most active volcanoes?

 Indonesia.

500

 Why is there water on Earth?

It arrived in comments and asteroids billions of years ago during a period called the Late Heavy Bombardment.

500

What is the process called when a gas turns into a solid without first becoming a liquid?

Deposition.

500

Who was the first woman to win a Nobel Prize in physics?

Marie Curie.

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