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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
Gravity
B
Push
C
Pull
D
All of the Above
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
.4 J
B
400 J
C
4 J
D
40 J
3) What is the unit of measurement for force?
A
tons
B
Joules
C
Newtons
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's roots will grow towards the side with the pot, and the stems will grow upward to the sun
D
The plant will lose turgor pressure and die.
5) Which substance cannot be decomposed into simpler substances?
A
ammonia
B
water
C
glucose
D
carbon
6) What evidence proves that no work is being done on an object?
A
an object has mass
B
an object is rigid
C
an object moves
D
an object remain stationary
7) Which situation describes a chemical reaction?
A
Nail rusting after it is left out in the rain
B
Paint drying on a house
C
Crystals forming after water is placed in a freezer
D
Sugar dissolving in a glass of tea
8) Which molecule in the equation for photosynthesis represents food energy made by plants?
A
water
B
carbon dioxide
C
carbon
D
glucose
9) As food moves through the human digestive system, which change occurs?
A
a physical change
B
a chemical change
C
a reversible change
D
both a chemical and a physical change
10) Which of the following is the correct formula for work?
A
work=force/distance
B
work=force + distance
C
work=force-distance
D
work=force x distance
*select an answer for all questions
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