Matter
Chemical Reactions
Forces and Motion
Energy
Science Trivia
100
The phase of matter with a definite volume and no definite shape is called...
a. solid
b. liquid
c. gas
d. plasma
Liquid
100
What is Carbon's atomic mass?
a. 6
b. 12
c. 12.011
d. C
c. 12.011
100
The force of gravity pulling on an object is called...
a. velocity
b. mass
c. inertia
d. weight
d. weight
100
What is energy?
a. conservation of movement
b. the total forces acting on an object
c. how fast work gets done
d. the ability to cause motion or change
d. the ability to cause motion or change
(the ability to do work)
100
How much of the Earth is covered in water?
71%
(70-75% is acceptable)
200
How many atoms are in a single molecule of Na2NO3?
a. 5
b. 6
c. 7
d. 8
6
200
What part of the diagram are the protons?
C
200
The ability to cause motion or change is called...
a. energy
b. temperature
c. power
d. watts
a. Energy
200
Still water held behind a dam is an example of what kind of energy?
a. kinetic
b. elastic
c. mechanical
d. potential
d. potential
200
What is the largest organ in the human body?
Skin
300
When you heat a substance, the molecules...
a. slow down, and get closer together
b. speed up, and get closer together
c. slow down, and get farther apart
d. speed up, and get farther apart
d. speed up, and get farther apart
300
A substance that produces hydroxide ions (OH-) in solution is called...
a. acid
b. base
c. neutral
d. salt
Base
300
Give three examples of Chemical Energy
Answers may vary
Possible examples: digestion, a battery, ice pack, photosynthesis, combustion (fire), an engine, etc
300
What two factors determine an object's kinetic energy?
a. mass and volume
b. speed and mass
c. speed and acceleration
d. inertia and force
b. speed and mass
300
Which muscle in the human body produces the most force for its size?
a. Jaw
b. Quads
c. Biceps
d. Heart
a. Jaw
400
An object has a mass of 20 grams and a volume of 10 cubic centimeters. What is the density of the object?
a. 1 g/cm
b. 1 g/cm3
c. 2 g/cm3
d. 0.5 g/cm3
c. 2 g/cm3
400
On the pH scale, what substances are in the range 0-6?
a. acid
b. base
c. neutral
d. salt
Acid
400
When an object floats in water, how much water does it displace (push aside)?
a. enough water to equal the object's own weight
b. the same volume of water as the object's own volume
c. twice as much water as the object's own weight
d. enough water to match the object's density
a. enough water to equal the object's own weight
400
The formula for Kinetic energy is 1/2(mass x speed)2.
Which ball would hurt less? (Calculator time...)
a. A 30 kg ball thrown at 10 meters/second
b. A 10 kg ball thrown at 50 meters/second
c. A 20 kg ball thrown at 20 meters/second
d. A 40 kg ball thrown at 5 meters/second
d. A 40 kg ball thrown at 5 meters/second
1/2 (40 x 5)2 = 20,000 gigajoules
400
How many volts can an electric eel produce?
a. 50
b. 100
c. 500
d. 1000
500
500
Fe + O2 -----> Fe2O3
What is a balanced form of the chemical equation above?
a. 4Fe + 3O2 -----> 2Fe2O3
b. 6Fe + 4O2 -----> 6Fe2O3
c. 4Fe + 3O2 -----> 3Fe2O3
d. 2Fe + 3O2 -----> 2Fe2O3
a. 4Fe + 3O2 -----> 2Fe2O3
500
What are TWO of Newton's Three Laws of Motion?
Newton's First Law (Inertia) = an object at rest will stay at rest; an object in motion will stay in motion
Newton's Second Law. (Force) = the force acting on an object is dependent on its mass and acceleration. F = ma
Newton's Third Law = for every action, there is an equal and opposite reaction
500
What is the difference between energy transfer and energy transformation?
Answers vary.
Transfer = change energy from one place to another. (Dominoes transfer kinetic energy to each other)
Transformation = changing energy from one form to another.
(A wind turbine transforms kinetic energy in the wind into mechanical energy, then into electrical energy)
500
If you mix all colors of light, what will you get?
a. White
b. Black
c. Rainbow
d. Brown
a. White