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2nd Six Weeks Test Review
Test Description: Includes Topics: -Geotropism -Turgor Pressure -Force -Work -Chemical and Physical Changes during digestion
Instructions: Answer all questions to get your test result.
1) How do we define a force?
A
Push
B
Gravity
C
All of the Above
D
Pull
2) A weightlifter lifts a weight over his head with a force of 20 Newtons a distance of 2 meters. How much work did he do?
A
400 J
B
4 J
C
.4 J
D
40 J
3) What is the unit of measurement for force?
A
Newtons
B
tons
C
Joules
D
meters
4) A rose plant has been turned on its side. Which of the following best describes what will happen to the plant?
A
The plant does not posses enough forces to live.
B
The plant's roots will grow directly downward, and the stems will grow upward to the sun
C
The plant will lose turgor pressure and die.
D
The plant's roots will grow towards the side with the pot, and the stems will grow upward to the sun
5) Which substance cannot be decomposed into simpler substances?
A
water
B
ammonia
C
glucose
D
carbon
6) What evidence proves that no work is being done on an object?
A
an object remain stationary
B
an object moves
C
an object is rigid
D
an object has mass
7) Which situation describes a chemical reaction?
A
Crystals forming after water is placed in a freezer
B
Paint drying on a house
C
Nail rusting after it is left out in the rain
D
Sugar dissolving in a glass of tea
8) Which molecule in the equation for photosynthesis represents food energy made by plants?
A
carbon dioxide
B
water
C
glucose
D
carbon
9) As food moves through the human digestive system, which change occurs?
A
both a chemical and a physical change
B
a reversible change
C
a physical change
D
a chemical change
10) Which of the following is the correct formula for work?
A
work=force/distance
B
work=force x distance
C
work=force + distance
D
work=force-distance
*select an answer for all questions
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