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Chapters 2, 1, And 4
Test Description: Gravity, chemical and physical properties, and energy transfer in ecosystems
Instructions: Answer all questions to get your test result.
1) Weight of an object is
A
is greater as it gets farther from Earth's surface.
B
is measured with a graduated cylinder.
C
the affect of friction with a scale.
D
the force of Earth's pull on that object.
2) An example of contact forces is
A
electricity.
B
magnetism.
C
gravity.
D
friction.
3) Plants must make their own food using
A
oxygen
B
carbon dioxide, water, chlorophyll
C
chlorophyll
D
water
4) You weigh less on Earth than in a spaceship orbiting 800 kilometers above Earth. Is this statement true or false? What is the scientific reasoning?
A
True. The pull of gravity is stronger as you are farther from Earth and it tries to pull you back in from space.
B
False. You would weight the same on both. Gravity is working at the same rate.
C
True. Your weight does not change due to gravity.
D
False. You are farther from Earth the pull of gravity decreases. Gravity=force that pulls objects down. weigh less on the sp
5) What is the original source of most energy used in a food chain or food web?
A
chemosynthesis
B
the sun
C
plants
D
cellular respiration
6) Gravity is the force that
A
causes the earth to spin on its axis.
B
pushes up on an object.
C
slows an object as it falls.
D
pulls an object down toward earth's center.
7) force
A
the force of attraction between any two objects
B
idk
C
push or pull that acts on an object
D
the force that results when two materials rub against each other
8) friction
A
the force of attraction between any two objects
B
push or pull that acts on an object
C
the force that results when two materials rub against each other
D
idk
9) gravity
A
idk
B
push or pull that acts on an object
C
the force that results when two materials rub against each other
D
the force of attraction between any two objects
10) As you walk down the hall playing on your phone, you don't see the custodian, Tammy, mopping the floor. After a few steps, you start to slip. In a fraction of a second, you find yourself on the floor. You fell because gravity is pulling you down.
A
False
B
True
11) Farmer Bob has a large herd of cattle. He wants to make sure that his herd has plenty of food for the winter. He purchases 700 bales of hay. Why would he only purchase hay for the cattle?
A
Cattle are scavengers which means they only eat plants.
B
Cattle are herbivores which means they only eat plants.
C
Cattle are decomposers which means they only eat plants.
D
Cattle are carnivores which means they only eat plants.
12) In the absence of air resistance, an apple and a feather will fall at
A
at the same rate. The feather will fall slower though.
B
the same rate and hit the ground at the same time.
C
at the same rate. The apple will fall faster though.
D
different rates. The apple will hit the ground first.
13) grass---- zebra ----- lion would be an example of a___________.
A
photosynthesis
B
food chain
C
cellular respiration
D
food web
14) Gravity is a __________________ force.
A
friction
B
noncontact
C
gravity
D
contact
15) During a lab, you mix 2 items together. When you do, one of the items disappears as you stir it into the liquid. Nothing else happens. What kind of change happened?
A
physical
B
gravity
C
chemical
D
magnetism
16) Which of the following processes uses the products of photosynthesis?
A
circulation of sugar
B
storage of chloroplasts
C
photosynthesis
D
cellular respiration
17) During a lab experiment, you mix together 2 items. When you do, they start to bubble. What kind of change is occuring?
A
correct
B
chemical
C
physical
D
friction
*select an answer for all questions
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