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Second 9 Weeks Exam Review
Test Description: Exam Review
Instructions: Answer all questions to get your test result.
1) What is density?
A
The amount of matter in a given amount of space.
B
The amount of weight an object has.
C
The amount of space an object takes up.
D
The number of atoms in a molecule.
2) Why does a metal spoon in a pot of hot water get hot?
A
conduction
B
burning
C
convection
D
radiation
3) What type of energy is light?
A
nuclear
B
electrical
C
chemical
D
electromagnetic
4) How does a thermometer work?
A
The red liquid expands and rises when the temperature is cold.
B
The red liquid contracts and rises when the temperature is cold.
C
The red liquid expands and rises when the temperature is hot.
D
The red liquid contracts and rises when the temperature is hot.
5) The following are all signs that a chemical change may have taken place.
A
solid forms, temperature change, color change, odor
B
temperature change, shape change, light produced
C
change in color, state of matter, odor, bubbles form
D
color change, odor, density, bubbles form
6) What kind of stored potential energy is found in fuels?
A
gravitational potential energy
B
elastic potential energy
C
chemical potential energy
D
solar potential energy
7) Which of the following is not a form of energy?
A
heat
B
light
C
friction
D
electricity
8) How would you increase your potential energy?
A
Increase your speed and distance
B
increase your mass and volume
C
Increase your speed and mass
D
Increase your mass and height
9) How does heat get from the sun to the earth?
A
conduction
B
radiation
C
convection
D
photosynthesis
10) Why does ice float in water?
A
Ice has less mass than water.
B
Ice is less dense than water.
C
Ice has more mass than water.
D
Ice is more dense than water.
11) When a liquid changes to a gas, this is called
A
sublimation
B
evaporation
C
condensation
D
freezing
12) What tool is used to measure the volume of a liquid?
A
graduated cylinder
B
spring scale
C
meter stick
D
balance
13) On the periodic table, the atomic number tell you
A
the number of protons or electrons
B
the number of neutrons
C
the number of valence electrons
D
the mass of the atom
14) Two or more different atoms combine chemically to form a new substance called
A
a compound
B
an atom
C
a molecule
D
a mixture
15) If you were to travel to the moon, your weight would remain the same, but your mass would change.
A
True
B
False
16) What energy transformation takes place in a dam?
A
mechanical to electrical
B
electrical to mechanical
C
mechanical to nuclear
D
chemical to electrical
17) What does 'heat is a one way street' mean?
A
heat only travels from top to bottom.
B
heat only travels from cooler areas to warmer areas.
C
heat only travels from warmer areas to cooler areas.
D
heat only travels from east to west.
18) In what state of matter do the molecules move freely and slide past each other?
A
liquid
B
gas
C
solid
D
plasma
19) In which state of matter to atoms move so quickly that the electrons escape from the electron cloud?
A
liquid
B
gas
C
solid
D
plasma
20) Everything in the universe is made of tiny particles called
A
protons
B
molecules
C
neutrons
D
atoms
*select an answer for all questions
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