Quiz about Review: Final Exam

Question 1

John is the pitcher for his baseball team, the Wildcats.

Which of the following best describes what happens to the ball right after

John throws a pitch?

Accepted Answer

Kinetic energy is transferred

from John's arm to the ball.

Answer

Kinetic energy is transferred

from the ball to the air.

Answer

Potential energy is

transferred from the ball to

the air.

Answer

Potential energy is

transferred from John's arm

to the ball.

Question 2

Which of the scenarios best models

the conversion of kinetic energy into

thermal energy?

Accepted Answer

Someone warms their hands

by rubbing them together

quickly.

Answer

Someone warms their hands

by placing them by a fire.

Answer

Someone warms their hands

by wearing gloves.

Answer

Someone warms their hands

by placing them near a light

bulb.

Question 3

A student is on a rollercoaster. Where

is potential energy the greatest?

Accepted Answer

location B

Answer

location A

Answer

location C

Answer

locations A and C

Question 4

Anna drop three different balls from your second-floor deck to the

ground. The mass of the balls is shown. Which ball will experience the greatest change in kinetic energy from the deck to the ground?

Accepted Answer

baseball

Answer

golf ball

Answer

tennis ball

Answer

both

Question 5

The diagram represents the reaction of methane with oxygen gas to form carbon dioxide and water. The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?

Accepted Answer

The total mass of the

particles in the system stays

the same.

Answer

The total number of particles

in the system decreases.

Answer

The total number of particles

in the system increases.

Answer

The total mass of the

particles in the system

increases.

Question 6

What do you call the basic unit of an element?

Accepted Answer

atom

Answer

molecule

Answer

compound

Answer

mixture

Question 7

What is formed when elements are combined chemically?

Accepted Answer

compound

Answer

atom

Answer

mixture

Answer

molecule

Question 8

What do you call two or more atoms which is the basic unit of substances?

Accepted Answer

molecule

Answer

element

Answer

mixture

Answer

compound

Question 9

What is formed when different substances only combine physically?

Accepted Answer

mixture

Answer

atom

Answer

molecule

Answer

element

Question 10

Which of the following are examples of chemical change?

Accepted Answer

digestion of food, burning of natural gas

Answer

rough texture of floor, red color of apple

Answer

grating cheese, water condensing into fog

Answer

writing of paper, looking out of the window

Question 11

What type of solution is salt water?

Accepted Answer

homogenous solution

Answer

suspension

Answer

heterogenous solution

Answer

pure substance

Question 12

The chemical formula for ethanol is C₂H₆O. Which of the following

diagrams could be used to represent ethanol?

Accepted Answer

Question 13

A student adds 5 grams of calcium chloride to 20 milliliters of water and observes a chemical reaction. If the reaction is exothermic (releases thermal energy), what will happen?

Accepted Answer

The temperature of the liquid will increase.

Answer

The volume of the liquid will decrease.

Answer

The temperature of the liquid will stay the same.

Answer

The mass of the liquid will decrease.

Question 14

What is it called when natural resources undergo a chemical process that result in the formation of a new product?

Accepted Answer

synthetic material

Answer

natural fibers

Answer

physical change

Answer

pure substance

Question 15

Ron drew this picture to illustrate photosynthesis. Which answer below properly describes the picture?

Accepted Answer

sunlight, carbon dioxide,

water, glucose, oxygen

Answer

sunlight, oxygen, water,

glucose, carbon dioxide

Answer

sunlight, carbon dioxide,

water, oxygen, glucose

Answer

carbon dioxide, sunlight,

glucose, water, oxygen

Question 16

In an ecosystem, at what level is the most energy found?

Accepted Answer

producer

Answer

consumer

Answer

decomposer

Answer

scavengers

Question 17

Which of the following is an example of an abiotic factor?

Accepted Answer

soil

Answer

mushroom

Answer

plants

Answer

producer

Question 18

Which two of the following factors might lead to a higher carrying capacity?

Accepted Answer

food

Accepted Answer

living space

Answer

hunting

Answer

fishing nets

Answer

disease

Question 19

In the water cycle, how do you call the process where liquid water changes to water vapor?

Accepted Answer

evaporation

Answer

condensation

Answer

precipitation

Answer

photosynthesis

Question 20

What process refers to the liquid water falling to the Earth's surface?

Accepted Answer

precipitation

Answer

evaporation

Answer

condensation

Answer

cellular respiration

Question 21

What process allows producers to make their own food?

Accepted Answer

photosynthesis

Answer

cellular respiration

Answer

transpiration

Answer

evaporation

Question 22

What do you call the organisms that recycle and release nutrients back into the soil?

Accepted Answer

decomposers

Answer

producers

Answer

scavengers

Answer

consumers

Question 23

The nitrogen and carbon cycles are essential for life on Earth. Any interruption in one part of either cycle interferes with the entire cycle. In the nitrogen cycle, why is it important to "fix" nitrogen?

Accepted Answer

Nitrogen gas is not usable by organisms, but nitrogen compounds are usable.

Answer

Fixed nitrogen stays in one place, and nitrogen gas does

not.

Answer

Without being fixed, nitrogen

is toxic to plants

Answer

Nitrogen gas is an active

element and readily

combines with other

elements.

Question 24

Which statement best explains how the removal of trees from Earth upsets the carbon cycle?

Accepted Answer

Less carbon is taken up from the air and made available to

living things.

Answer

Decomposers increase because they no longer

compete with trees for carbon.

Answer

The cycle is not affected.

There are many other green plants that have the same role as trees in the carbon cycle.

Answer

More carbon enters the cycle, reducing CO2 in the air.

Question 25

Ecosystem services are important to humans, as natural resources provide benefits and environmental benefits to humans. Which of the following design solutions is most effective in maintaining ecosystem services?

Accepted Answer

Implementing crop rotation practice to improve soil quality in an area

Answer

Removing all vegetation and

soil from an area to create a paved surface

Answer

Planting a single crop in an area

Answer

Building high-rise buildings

in a town to increase the population that can live in a limited area

Question 26

The Mississippi River contains waterweeds that are food for the river's crayfish. The crayfish are eaten by mudpuppies (a species of salamander) and are food for the blue catfish. Which energy pyramid correctly shows the energy flow in this Mississippi River food chain?

Accepted Answer

Question 27

Humans rely on fish as a source of food. Are fish a renewable or nonrenewable resource?

Accepted Answer

Fish are a renewable resource

but must be managed

sustainably.

Answer

Fish are a nonrenewable

resource because it takes a long time to replace them.

Answer

Fish are a nonrenewable

resource because humans have destroyed their habitat.

Answer

Fish are a renewable resource

but only on aquaculture

farms.

Question 28

When you are finished with your laboratory experiment:

Accepted Answer

All of the above

Answer

You should wash your hands.

Answer

You should put lab materials

back where you found them.

Answer

You should clean up your lab

area.

Question 29

What is the temperature on the

thermometer below? Measurements

are in Celsius.

Accepted Answer

6 degrees

Answer

- 0.6 degrees

Answer

0.6 degrees

Answer

- 6 degrees

Question 30

Density = Mass/Volume

A student was given a metal object with a mass of 16.0 grams. She dropped the metal object into a 250-ml graduated cylinder containing 150.0 ml of water. Using the table above, which metal most

likely makes up the object?

Accepted Answer

Aluminum

Answer

Copper

Answer

Iron

Answer

Titanium

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