7 th Grade Science CATS Review. The circus dog in the picture below is balancing a ball on his nose. The ball has __________ energy right now, but when.

7th Grade Science

CATS Review

The circus dog in the picture below is balancing a ball on his nose. The ball has __________ energy right now, but when he drops the ball it will have

__________ energy.

a. potential; kinetic

b. heat; potential

c. kinetic; potential

d. heat; kinetic

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When a gas changes into a liquid, it is called ____________, and the speed of the molecules is ___________.

a. condensation; increasing

b. sublimation; increasing

c. condensation; decreasing

d. evaporation; decreasing

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Animals get energy from the food they eat. The original source of the energy in their

food is

a. the soil.

b. the Sun.

c. the water cycle.

d. fertilizer.

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Elizabeth collects different types of rocks whenever she goes on vacation. She has rocks that contain shiny crystals, grainy rocks, and rocks that are smooth. These rocks are formed by different processes. Which of the

following is NOT a process by which rocks are formed?

a. compaction of sediments

b. heat and pressure within Earth

c. freezing of sediments

d. cooling of magma at Earth's surface

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John and his mother have blue eyes. His brother, sister, and father all have brown eyes. John is often told that he "has his mother’s eyes." How can this trait be characterized?

a. It is an adaptation. b. It is environmental. c. It is acquired. d. It is inherited.

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As the bell rings, which energy transformation

occurs?

Chem

ical

ener

gy is

c...

Chem

ical

ener

gy is

c...

Mec

hanic

al e

nergy

is...

Mec

hanic

al e

nergy

is...

25% 25%25%25%

0%

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a. Chemical energy is converted into sound energy.

b. Chemical energy is converted into heat energy.

c. Mechanical energy is converted into sound energy.

d. Mechanical energy is converted into heat energy.

The destruction of rain forests often occurs through what is called "slash and burn" agriculture. This means that trees are cut down and burned, and the land is then used for growing short-term crops or for raising cattle. Which of the following is a result of 'slash and burn' agriculture that can affect the cycles of oxygen and carbon dioxide in the air?

The

amount o

f oxy

ge...

The

fore

st w

ill re

ceiv

e...

The

amount o

f oxy

ge...

The

amount o

f car

bo...

25% 25%25%25%

0%

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a. The amount of oxygen in the air will be increased.

b. The forest will receive less rain. c. The amount of oxygen in the air

will be reduced. d. The amount of carbon dioxide in

the air will be reduced.

Which of the following is a compound?

sal

t wat

er

hyd

rogen

ozo

ne

tabl

e sa

lt

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0%

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a. salt water

b. hydrogen

c. ozone

d. table salt

Which of the following is a characteristic of elements?

They

bre

ak d

own wh..

They

can

not b

e div

ide.

..

They

can

be

alte

red w

...

They

are

alw

ays

met

als.

25% 25%25%25%

0%

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a. They break down when reacting with acids.

b. They cannot be divided into smaller substances.

c. They can be altered with an electric current.

d. They are always metals.

Which is a naturally-occurring pollutant?

junk

yard

s

fact

ory s

moke

gar

bage

dump

volc

anic

ash

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0%

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a. junkyards

b. factory smoke

c. garbage dump

d. volcanic ash

Some rocks are formed by heat and pressure.

What is the heat source for rock formation?

hea

t fro

m fo

rest

fire

s

hea

t fro

m th

e Sun

hea

t fro

m e

lect

rical

...

hea

t fro

m E

arth

's in

te...

25% 25%25%25%

0%

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a. heat from forest fires

b. heat from the Sun

c. heat from electrical currents

d. heat from Earth's interior

Tom is going to buy two hamsters. He wants to breed them and sell the baby hamsters to a local pet store. The store owner tells him that his customers prefer dark brown hamsters with white bellies, long fur, black eyes, and long tails. Tom found a female hamster with all of those characteristics. Which male hamster should Tom buy in order to have the BEST chance of breeding baby

hamsters with MOST of those characteristics?

X Y

W

Z

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0%

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Hamster W Hamster X Hamster Y Hamster Z

Tan Fur Dark Brown Fur Tan Fur Dark Brown Fur

White Belly White Belly White Belly Dark Brown Belly

Long Fur Long Fur Short Fur Long Fur

Long Tail Long Tail Long Tail Short Tail

Brown Eyes Brown Eyes Black Eyes Black Eyes

a. Xb. Y c. W d. Z

The fish, the dog, and the bird are alike in many ways. One way is that they all have

legs.

hai

r.

lung

s.

bac

kbon

es.

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0%

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a. legs.

b. hair.

c. lungs.

d. backbones.

In which phase of matter are molecules the most tightly packed?

solid

liquid

wat

er g

as

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0%

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a. solidb. liquidc. waterd. gas

Most of the chemical energy of the gasoline burned in a car is not used to move the car but is

changed into

ele

ctric

ity.

mag

netis

m.

sound.

hea

t.

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0%

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a. electricity.

b. magnetism.

c. sound.

d. heat.

Greg is trying to push a box of books across the floor of his room. The box of books doesn't move because the forces on the box are ____________. When his little brother walks in and starts pushing with him, the box begins to slide across the floor. His brother's pushing, combined with

his, makes the forces on the box ______________.

shift

ing; s

till

bal

ance

d; unbal

ance

d

not a

ctin

g on th

e box.

..

unbal

ance

d; bal

ance

d

25% 25%25%25%

0%

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a. shifting; still

b. balanced; unbalanced

c. not acting on the box; moving

d. unbalanced; balanced

Organisms that require two parents reproduce __________, while organisms that require only one parent reproduce __________.

dom

inan

tly; r

eces

sive

ly

sex

ually

; ase

xual

ly

rece

ssiv

ely;

dom

inan

tly

ase

xual

ly; s

exua

lly

25% 25%25%25%

0%

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a. dominantly; recessively

b. sexually; asexually

c. recessively; dominantly

d. asexually; sexually

The offspring of a plant that reproduces asexually will

dev

elop fr

uit ev

en if

...

fail

to g

row

and

devel

..

be

inca

pable

of p

rod...

shar

e al

l of t

he p

aren

t..

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0%

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a. develop fruit even if the parent did not.

b. fail to grow and develop normally.

c. be incapable of producing flowers.

d. share all of the parent's characteristics.

Which of these shows the correct relationship between tissues, organs, cells, and organ systems from least complicated to most complicated?

0%

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cel

ls

tissu

es

orga

ns

cel

ls

organ

s t

issu

es

org

ans

tis

sues

ce

lls

org

ans

org

an s

yste

m ..

.

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a. cells tissues organs organ system

b. cells organs tissues organ system

c. organs tissues cells organ system

d. organs organ system tissues cells

A water cycle diagram is shown below.

pre

cipi

tatio

n

eva

poratio

n

conden

satio

n

run-o

ff

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0%

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What does Arrow 1 represent?

a. precipitation

b. evaporation

c. condensation

d. run-off

Which one of the following statements about

eclipses is true?

Durin

g a lu

nar e

clip

s..

Durin

g a s

olar

ecl

ips.

.

An e

clip

se w

ill a

lwa.

.

An e

clip

se m

ay la

st a

...

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0%

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a. During a lunar eclipse, the Moon passes between Earth and the Sun.

b. During a solar eclipse, the Moon passes between Earth and the Sun.

c. An eclipse will always occur during a meteor shower.

d. An eclipse may last as long as five days

The rate of change of an object's _____________ is called ______________.

dis

tanc

e; a

ccel

erat

ion

acc

eler

atio

n; for

ce

vel

ocity

; acc

eler

atio

n

acc

eler

atio

n; spee

d

25% 25%25%25%

0%

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a. distance; acceleration

b. acceleration; force

c. velocity; acceleration

d. acceleration; speed

Plants use carbon dioxide for which of the following processes?

was

te d

isposa

l

circ

ulatio

n

mov

emen

t

food

pro

ductio

n

25% 25%25%25%

0%

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a. waste disposal

b. circulation

c. movement

d. food production

Fill in the blanks in the chart below with the

correct terms.

Bio

tic; C

omm

unity; .

..

Org

anis

ms;

Com

mun

i...

Org

anis

ms;

Popula

tio..

Bio

tic; P

opulatio

n; ...

25% 25%25%25%

0%

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a. Biotic; Community; Populationb. Organisms; Community;

Population c. Organisms; Population;

Community d. Biotic; Population; Community

What is the purpose of biological adaptation?

to in

crea

se re

product

i..

to in

crea

se th

e sp

eed...

to m

ake

it har

der fo

r ..

to in

crea

se th

e he

ight .

.

25% 25%25%25%

0%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30     A.

food production

    B.

movement

    C.

circulation

    D.

waste disposal

9. 

a. to increase reproductive success of an organism

b. to increase the speed with which an organism can run

c. to make it harder for an organism to find food

d. to increase the height of an organism

Mimi is able to see the image from the television reflecting off the surface of a mirror. Why can't she see it reflect off the surface of a sheet of

newspaper?

Lig

ht wav

es tr

avel

th...

The

mirr

or ref

lect

s th

e...

The

mirr

or is

thic

ker .

..

The

mirr

or is

transl

uce..

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0%

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a. Light waves travel through the sheet of paper but not through the mirror.

b. The mirror reflects the light and the sheet of paper scatters the light.

c. The mirror is thicker than the sheet of paper.

d. The mirror is translucent and the sheet of paper is transparent.

Genes are responsible for:

all

pref

eren

ces

of a

n...

all

traits

of a

n or

ganis

m.

all

inher

ited tr

aits

of .

.

no tr

aits

of a

n org

anis

m.

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0%

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a. all preferences of an organism.

b. all traits of an organism.

c. all inherited traits of an organism.

d. no traits of an organism.

Beth carries the recessive gene for red hair. Her husband Steve does not. Which Punnett Square correctly represents the possibilities that

their children will have red hair?

w x y z

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0%

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W. X. Y. Z.

a. w

b. x

c. y

d. z

 __________ and __________ are two opposite processes that shape shoreline features.

Ero

sion; w

eath

erin

g

Ero

sion; d

eposi

tion

Sed

imen

tatio

n; dep

os...

Wea

ther

ing;

acc

umu...

25% 25%25%25%

0%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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a. Erosion; weathering

b. Erosion; deposition

c. Sedimentation; deposition

d. Weathering; accumulation

The function of the immune system is to:

pro

tect

the

body fro

m...

circ

ulate

blo

od th

ro...

pro

tect

the

organ

s of .

..

pro

duce h

orm

ones.

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0%

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a. protect the body from foreign substances and disease.

b. circulate blood throughout the body.

c. protect the organs of the body. d. produce hormones.