Science Facts Recall

Name:

Date:

Instructions: Test your recall of important science facts!

1.
What is the chemical formula for water?
A
CO2
B
O2
C
H2O
D
NaCl
2.
What planet is known as the 'Red Planet'?
A
Mars
B
Jupiter
C
Saturn
D
Venus
3.
What gas do plants absorb from the atmosphere during photosynthesis?
A
Carbon dioxide
B
Nitrogen
C
Oxygen
D
Hydrogen
4.
How many planets are in our solar system?
A
9
B
10
C
8
D
7
5.
What is the hardest natural substance on Earth?
A
Diamond
B
Topaz
C
Ruby
D
Quartz
6.
What is the largest organ in the human body?
A
Lungs
B
Skin
C
Liver
D
Brain
7.
What is the speed of light in a vacuum (approximately)?
A
Both A and C
B
186,000 miles per hour
C
670 million miles per hour
D
186,000 miles per second
8.
What element does the symbol 'Fe' represent on the periodic table?
A
Iron
B
Francium
C
Fermium
D
Fluorine
9.
How long does it take for light from the Sun to reach Earth?
A
About 8 seconds
B
About 8 minutes
C
About 80 minutes
D
About 8 hours
10.
What force keeps planets in orbit around the Sun?
A
Magnetic force
B
Nuclear force
C
Gravity
D
Centrifugal force
11.
What is the most abundant gas in Earth's atmosphere?
A
Carbon dioxide
B
Nitrogen
C
Hydrogen
D
Oxygen
12.
What is absolute zero in Fahrenheit?
A
-273°F
B
-500°F
C
-360°F
D
-460°F
13.
What particle in an atom has a negative charge?
A
Quark
B
Neutron
C
Proton
D
Electron
14.
What is the process by which a solid turns directly into a gas called?
A
Condensation
B
Deposition
C
Evaporation
D
Sublimation
15.
What scientist is credited with developing the theory of general relativity?
A
Max Planck
B
Niels Bohr
C
Albert Einstein
D
Isaac Newton

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