science
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100

 The concept of gravity was discovered by which famous physicist

Sir Isaac Newton

100

What is the name of the tallest grass on earth? ...

Bamboo

100

Which is the most abundant element in the universe?

Hydrogen

100

Why is the sky blue? The earth is surrounded by an atmosphere.

Blue is scattered more than other colors because it travels as shorter, smaller waves

100

How much does the earth weigh

5.9725 billion trillion metric tons

200

How far away is the sun

91.566 million mi

200

What is a black hole

a place in space where gravity pulls so much that even light can not get out.

200

How do airplanes fly

Airplane wings are shaped to make air move faster over the top of the wing

200

How do flies walk on the ceiling

pushing, twisting, and peeling its footpads free

200

How are rainbows made

When sunlight hits a rain droplet, some of the light is reflected.

300

Are sharks mammals

They are not mammals

300

What does DNA stand for

Deoxyribonucleic acid

300

How many bones are in the human body

206 bones.

300

What is the hardest natural substance on Earth?

Diamond

300

Which is the main gas that makes up the Earth's atmosphere

78 percent nitrogen and 21 percent oxygen

400

Humans and chimpanzees share roughly how much DNA 

98.8 percent

400

How many days does it take for the Earth to orbit the Sun

365 days

400

How much does the earth weigh

5.972 × 10^24 kg

400

Which blood type is the rarest in humans

  • O-positive – 40 %
400

Which mountain top lies farthest from Earth's center

the summit of Chimborazo

500

Where does the majority of body heat escape from

liver, brain, heart, and skeletal muscles during exercise.



500

Does music affect on animal behavior

 reduces the stress of the animals and helps to ensure a normal or calm behavior

500

Does the color of food or drinks affect whether or not we like them

When a food's color is off or is different than what we expect, our brain tells us that it tastes different too.

500

Does music have an affect on plant growth

music can impact plant growth.

500

Which kind of food do dogs (or any animal) prefer best

 beef, pork and lamb to chicken, liver and horsemeat and strongly prefer meat to cereal diets

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