Chapters 2, 1, And 4 Question Preview (ID: 44280)


Gravity, Chemical And Physical Properties, And Energy Transfer In Ecosystems. TEACHERS: click here for quick copy question ID numbers.

Gravity is a __________________ force.
a) noncontact
b) gravity
c) contact
d) friction

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) chemical
c) gravity
d) magnetism

Which of the following processes uses the products of photosynthesis?
a) cellular respiration
b) circulation of sugar
c) photosynthesis
d) storage of chloroplasts

During a lab experiment, you mix together 2 items. When you do, they start to bubble. What kind of change is occuring?
a) friction
b) correct
c) chemical
d) physical

grass---- zebra ----- lion would be an example of a___________.
a) food web
b) photosynthesis
c) cellular respiration
d) food chain

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 carnivores 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 scavengers which means they only eat plants.

In the absence of air resistance, an apple and a feather will fall at
a) the same rate and hit the ground at the same time.
b) different rates. The apple will hit the ground first.
c) at the same rate. The apple will fall faster though.
d) at the same rate. The feather will fall slower though.

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) True
b) False
c)
d)

gravity
a) the force of attraction between any two objects
b) the force that results when two materials rub against each other
c) push or pull that acts on an object
d) idk

force
a) push or pull that acts on an object
b) the force that results when two materials rub against each other
c) the force of attraction between any two objects
d) idk

What is the original source of most energy used in a food chain or food web?
a) the sun
b) chemosynthesis
c) cellular respiration
d) plants

Plants must make their own food using
a) chlorophyll
b) carbon dioxide, water, chlorophyll
c) oxygen
d) water

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

friction
a) the force of attraction between any two objects
b) the force that results when two materials rub against each other
c) push or pull that acts on an object
d) idk

Gravity is the force that
a) pulls an object down toward earth's center.
b) pushes up on an object.
c) causes the earth to spin on its axis.
d) slows an object as it falls.

Weight of an object is
a) is greater as it gets farther from Earth's surface.
b) the affect of friction with a scale.
c) is measured with a graduated cylinder.
d) the force of Earth's pull on that object.

An example of contact forces is
a) friction.
b) magnetism.
c) gravity.
d) electricity.

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