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2nd Nine Weeks Review
Test Description: 7th Grade Review for 2nd Nine Weeks Test
Instructions: Answer all questions to get your test result.
1) The measurement of an object's mass is a ____.
A
physical change
B
chemical change
C
physical property
D
chemical property
2) The ability of an apple to change color when exposed to air is a ____.
A
chemical change
B
physical property
C
chemical property
D
physical change
3) Living things are divided into two groups-______________and___________.
A
Consumers and producers
B
nitrogen and decomposers
C
Oxygen and hydrogen
D
Large and small
4) At what point does the ball have the most potential energy?
A
Just beofore you drop it
B
Just before you catch the ball
C
When it reaches its highest point
D
When it leaves your hand
5) Which of the following is NOT a possible sign of a chemical change?
A
the release of energy
B
change in color
C
change in state
D
the release of a gas
6) A process that changes light from the sun into sugar for food is called__________.
A
Photosynthesis
B
Respiration
C
Osmosis
D
Fermentation
7) Absolute age is ____.
A
the time is takes for half of the atoms in an isotope to decay
B
the process used to calculate the absolute age of rock by measuring the ratio of parent isotope to daughter product
C
the process in which the nucleus of an atom breaks down
D
the age, in years, of a rock or other object.
8) Respiration requires
A
CO
B
H2O
C
CO2
D
O2
9) Cardiac muscle is an example of
A
Rough muscle
B
Involuntary muscle
C
Smooth muscle
D
Voluntary muscle
10) Chemical energy is stored in __________molecules.
A
Oxygen
B
Food
C
Granulate
D
Plant
11) Chemical reactions break down food molecules into simpler substances and release stored energy in a process called____________.
A
metabolism
B
photosynthesis
C
fermentation
D
respiration
12) Photosynthesis and _______________ cannot take place without each other.
A
respiration
B
recycling
C
the carbon cycle
D
the nitrogen cycle
13) Energy may change into _________forms.
A
few
B
two
C
many
D
only one
14) The ____________________________states that energy is never created or destroyed.
A
law of repeated energy
B
rule of 72
C
law of concentration
D
law of conservation
15) When there is a lack of oxygen, ________ takes place instead of respiration.
A
Respiration
B
Fermentation
C
Photosynthesis
D
Metabolism
16) If a ball is being held in a glove, its energy would be__________.
A
Physical
B
Potential
C
Chemical
D
Kinetic
17) Three examples of physical change are ____.
A
applying lipstick, making lemonade, baking bread
B
boiling water, a nail rusting, a melting candle
C
melting ice, mowing the lawn, carving a statue
D
a pond freezing, breaking glass, a burning candle
18) The time is takes for half of the atoms in an isotope to decay is ----.
A
Radioactive decay
B
Half-life
C
Radiometric dating
D
Absolute age
19) What are the 3 main things that are needed for photosynthesis to take place?
A
Light, Sugar, H2O
B
O2, CO2, H2O
C
O2, CO2, Light
D
Light, H2O, CO2
20) All the chemical reactions in an organism make up its __________.
A
Metabolism
B
Respiration
C
Enzymes
D
Photosynthesis
*select an answer for all questions
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