geography
chemistry
biology
astronomy
5

What country lies above Mexico?

U.S.A.

5

What is the smallest unit of a substance that retains the properties of that substance?

molecules

5

What is the most common element in the human body? ...

water

5

What is at the center of the Milky Way galaxy?


A black hole.

10

What is the coldest place on Earth?

anatartica

10

What are substances that control the rates of chemical reactions?

catalysts 

10

Unlike most other fish, sharks have no ______? ...

bones

10

Who was the third astronaut to walk on the moon?


Pete Conrad.

15

What is the official currency of the United Kingdom?

Pound sterling

15

What type of charge does a neutron carry?

no

15

What is the scientific term for the production of light by living organisms?

bio luminescence.

15

How many stars make up the Big Dipper?


7 stars.

20

What are the names of the five oceans of the world?

Atlantic, Pacific, Indian, Arctic, and the Antarctic

20

What law states that the amount of heat needed to change one substance to another depends on the substances and not on the reactions involved?

Hess's law

20

What living animal has the heaviest brain?

sperm whale

20

How long does each season last on Neptune?

More than 40 years.

25

What is the capital of Canada?

Ottawa

25

Matter that does not enter chemical reactions is described as what?

inert

25

What human organ cleans fifty gallons of blood every day? ...

kidney

25

How far away is the nearest star, not the sun?


About 4.22 light-years from Earth.

30

What are the names of the seven continents of the world?

Asia, Africa, North America, South America, Antarctica, Europe, Australia

30

The temperature at which a gas becomes a liquid is its _____________?

condensation point

30

Which fruit is a hybrid of the pomelo and mandarin?

orange

30

Which planet has the largest ocean?

Jupiter

45

 What country has the most natural lakes?

canada

45

What English chemist and physicist discovered hydrogen?

Henry Cavendish

45

What is the only human body part that can't repair itself?

Teeth

45

Which planets do not have a natural satellite?


All the planets in the solar system except Mercury and Venus have natural satellites.

50

What U.S. state is home to no documented poisonous snakes?

Alaska

50

What is the common term for an electro-chemical cell in which terminals are connected to electrodes immersed in a solution of electrolytes?

electrolytic cells

50

How many gallons of water can a baobab tree store in its trunk?

32000

50

who described Saturn’s rings as the “ears of a teacup?”.

Galileo.

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