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NSCAS 8th Grade Science Review

Total questions: 110

Worksheet time: 3hrs 26mins

Name
Class
Date
1.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
2.
During which stage do clouds form?
a)
condensation
b)
evaporation
c)
precipitation
3.
Which stages does liquid water from the ocean turn into water vapor?
a)
condensation
b)
evaporation
c)
precipitation
d)
run off
4.
Which stage does ground water try to return to the ocean or soak into the ground?
a)
condensation
b)
evaporation
c)
precipitation
d)
run off
5.
What is water doing when it is changed to water vapor?
a)
evaporating
b)
condensing
c)
precipitating
d)
runoff
6.
What is water vapor doing when it changes to water?
a)
evaporating
b)
condensing
c)
precipitating
d)
runoff
7.
On a cold rainy day a baby is touching a cold window.  It feels so cold. Which way is the heat moving moving? 
a)
Cold is moving from the window to the hand.
b)
Heat is moving from the hand to the window.
c)
Heat doesn't move.
d)
It moves in currents
8.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high. 
9.

Insulators

a)

Materials that do not conduct heat well.

b)

A material that conducts heat well,

c)

The amount of energy required to raise the temperature of 1 kilogram of a material by 1 kelvin.

d)

The expansion of matter when it is heated.

10.

Conductor

a)

Materials that do not conduct heat well.

b)

A material that conducts heat well,

c)

The amount of energy required to raise the temperature of 1 kilogram of a material by 1 kelvin.

d)

The expansion of matter when it is heated.

11.

Part of the plant that absorbs water.

a)

Roots

b)

Flowers

c)

Petals

d)

Leaves

12.

Part of the plant that has chlorophyll

a)

Roots

b)

Flowers

c)

Petals

d)

Leaves

13.

The flowers from plants turn into _________.

a)

Fruits

b)

Trees

c)

Leaves

d)

Vegtables

14.
What does a plant need to survive?
a)
sunshine
b)
nutrients
c)
water
d)
all of the above
15.
What do the leaves of a plant do?
a)
They make the food for the plant.
b)
They soak up the water from the ground.
c)
They deliver water to the other parts of the plants
d)
They make seeds
16.
What part of the plant is #3?
a)
leaf
b)
root
c)
flower
d)
stem
17.

What is one job of the stem?

a)

To pollinate the plant

b)

To make food for the plant

c)

To carry food and water to the plant

18.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
19.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
20.
Which state of matter has tightly packed molecules?
a)
solid
b)
liquid
c)
gas
21.
Which state of matter has a definite shape?
a)
solid
b)
liquid
c)
gas
22.
The speed of the molecules determines the _____.
a)
volume
b)
density
c)
pressure
d)
temperature
23.

A ___ change causes the substance to change to a new substance with different properties.

a)

Physical

b)

Chemical

24.

A ____ change only changes the look of the substance but NOT the chemical make-up.

a)

Physical

b)

Chemical

25.

Is it a physical or chemical change?

a)

physical

b)

chemical

26.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

27.

A green powder is heated & a gas is given off while it turns to a black solid. This describes

a)

Physical Change

b)

Chemical Change

c)

Change in State

d)

Change in Temperature

28.

Identify what type of change happening in the picture below...

a)

Chemical Change

b)

Physical Change

c)

Endothermic Reaction

d)

Exothermic Reaction

29.

Identify what type of change happening in the picture below...

a)

Chemical Change

b)

Physical Change

c)

Endothermic Reaction

d)

Exothermic Reaction

30.
 2H2O
How many Hydrogen atoms are present?
a)
2
b)
4
c)
1
d)
10
31.
2H2O
How many Oxygen atoms are present?
a)
2
b)
4
c)
1
d)
5
32.
Carbon dioxide (CO2) contains how many atoms of oxygen?
a)
0
b)
1
c)
2
d)
3
33.
How many hydrogen atoms are in a molecule of glucose/sugar (C6H12O6)?
a)
6
b)
12
c)
18
d)
24
34.

A cactus

a)

Biotic factor

b)

Abiotic factor

35.

Air

a)

Biotic factor

b)

Abiotic factor

36.

A zebra skeleton

a)

Biotic factor

b)

Abiotic factor

37.

Soil or dirt

a)

Biotic factor

b)

Abiotic factor

38.

A pinecone

a)

Biotic factor

b)

Abiotic factor

39.

Weather (sunny, rainy, windy, snowy)

a)

Biotic factor

b)

Abiotic factor

40.
An ______ is an independent living thing.
a)
consumer
b)
producer
c)
organism
d)
herbivore
41.
All organisms need _____ to survive.
a)
Environment
b)
energy
c)
sun
d)
plants
42.
_________ cannot make their own food, so they need to consume (eat) plants or animals.
a)
consumers
b)
producers
c)
decomposers
43.
The  ____________ provides all the initial energy to plants.
a)
sun
b)
moon
c)
environment
d)
water
44.
____ make their own food through photosynthesis. 
a)
consumer
b)
decomposer
c)
producer
45.

Lions only eat buffalo, antelopes, zebras and crocodiles. They are called __________.

a)

Omnivore

b)

Herbivore

c)

Carnivore

d)

Delivore

46.

Bears eat fish, insects, plants, seeds, nuts and young elk. They are called __________.

a)

Franivore

b)

Carnivore

c)

Herbivore

d)

Omnivore

47.

An animal that only eats plants is a...

a)

carnivore

b)

omnivore

c)

herbivore

d)

decomposer

48.

Click on the imgae to make it larger-- Choose the herbivores in the food web....

a)

hawk

b)

mouse

c)

rabbit

d)

snake

49.

Click on the image to make it larger--The rabbit gets energy from the ....

a)

hawk

b)

mouse

c)

wildflowers

d)

grass

50.

Click on the image to make it larger-- Choose the living things that are producers...

a)

wildflowers

b)

rabbit

c)

snake

d)

grass

51.

Choose the living things in the food web that are consumers --click on the image to make it larger

a)

wildflowers

b)

hawk

c)

rabbit

d)

snake

e)

mouse

52.
What type of plate boundary is this?
a)
Plate
b)
Divergent
c)
Convergent
d)
Transform
53.
What type of event will occur at this boundary?
a)
Earthquake
b)
Volcano Eruption
c)
Tornado
d)
Mountain Building
54.
Identify the letter in the diagram.  Identify letter A
a)
Lithosphere
b)
Asthenosphere
c)
Mantle
d)
Outer Core
55.
Identify the letter in the diagram.  Identify letter E
a)
Lithosphere
b)
Asthenosphere
c)
Mantle
d)
Outer Core
56.
Identify the letter in the diagram.  Identify letter F
a)
Lithosphere
b)
Asthenosphere
c)
Mantle
d)
Outer Core
57.
Identify the letter in the diagram.  Identify letter G
a)
Crust
b)
Convection Current
c)
Inner Core
d)
Outer Core 
58.
Identify the letter in the diagram.  Identify letter B
a)
Crust
b)
Convection Current
c)
Inner Core
d)
Outer Core 
59.
Identify the letter in the diagram.  Identify letter D
a)
Lithosphere
b)
Asthenosphere
c)
Mantle
d)
Outer Core
60.
Identify the letter in the diagram.  Identify letter C
a)
Lithosphere
b)
Asthenosphere
c)
Mantle
d)
Inner Core
61.

Which adaptation gives the Bony Fish the best advantage of changing directions quickly when being chased by a predator?

a)

Fin with 2 lobes

b)

Flexible fin

c)

Thin bony spine

d)

Control of fin by muscles

62.

What does the shape of the Giant Water Lilly leaves do to help the plant survive in its environment?

a)

Helps catch rainwater

b)

Helps is stay on the waters surface

c)

Helps attract small fish

d)

Helps attract aquatic birds

63.

What does the shape of the Mequite leaves do to help the plant survive in its environment?

a)

The slim shape helps them avoid sunlight

b)

Slim shape helps attract pollinators

c)

Slim shape helps prevent water loss

d)

Slim shape helps them avoid herbivores

64.

Which bird is best adapted for catching fish and frogs?

a)

F

b)

G

c)

H

d)

J

65.

Which bird is best adapted for shredding meat?

a)

F

b)

G

c)

H

d)

J

66.

Which bird is best adapted for drinking nectar?

a)

F

b)

G

c)

H

d)

J

67.

T - tall and t = short

In the Punnett square, what belongs in the missing square?

a)

tt

b)

Tt

c)

TT

68.

G = green, g = yellow

The genotype for a yellow plant is...

a)

GG

b)

Gg

c)

gg

d)

all of the choices result in yellow

69.

Brown eyes are dominant over blue eyes. What is the probability that the offspring will have brown eyes in this cross?

a)

25%

b)

50%

c)

75%

d)

100%

70.
What is the phenotype of the heterozygous parent in the punnett square?
a)
green
b)
yellow
c)
hybrid
d)
purebred
71.

G = dominant green and g = recessive yellow

A fish has a Gg genotype, what will its phenotype be?

a)

yellow

b)

green

c)

greenish-yellow

d)

red

72.

Use the diagram to answer: which rock layer is the newest?

a)

A

b)

B

c)

C

d)

D

73.

Use the diagram to answer: which fossil is older than the fish fossil?

a)

A

b)

B

c)

C

d)

D

74.

Which of the fossils is the oldest?

a)

Trilobite

b)

Fish

c)

Plant

d)

Mammal

75.

Which fossil would be most useful in determining the relative age for the rocks in these geologic columns?

(Hint: Which would serve as an index fossil?)

a)

Ammonite

b)

Branchiopod

c)

Trilobite

d)

Turritella

76.

What does point C represent?

a)

Amplitude

b)

Trough

c)

Crest

d)

Wavelength

77.

What does point A represent?

a)

Amplitude

b)

Wavelength

c)

Crest

d)

Trough

78.

What is the number of complete waves passing a fixed point in a given amount of time?

a)

Amplitude

b)

Intensity

c)

Wavelength

d)

Frequency

79.

What is the frequency of this wave? You must count the number of complete waves.

a)

1 Hz

b)

5 Hz

c)

10 Hz

80.

Which type of waves have the longest wavelength?

a)

Visible light

b)

Radio waves

c)

X-rays

d)

Gamma-Rays

81.

Wavelengths are usually measured in ....

a)

seconds

b)

Hz

c)

inches

d)

meters

82.

Shorter wave lengths can carry more energy. Which of these probably carries the MOST energy:

a)

Infrared light

b)

Visible light

c)

X-rays

d)

UV light

83.

What is the distance between the calm sea and the highest wave called?

a)

Wave

b)

Frequency

c)

Amplitude

d)

Magnitude

84.
Which color has the lowest frequency?
a)
red
b)
green
c)
blue
d)
violet
85.

Which refers to the passing of a wave through an object?

a)

sound

b)

interference

c)

transmission

d)

frequency

86.

When light waves hit ice, most of them bounce off and radiate back into space. Because of this, ice is best described as which kind of surface?

a)

reflective

b)

absorbent

c)

dense

d)

rough

87.

A wave hits an object as shown.

Which kind of wave interaction is shown?

a)

absorption

b)

diffraction

c)

refraction

d)

reflection

88.

A wave hits an object as shown.

Which kind of wave interaction is shown?

a)

absorption

b)

diffraction

c)

refraction

d)

reflection

89.

A wave hits a wall as shown.

As the wave interacts with a wall, which kind of wave interaction is shown?

a)

absorption

b)

diffraction

c)

refraction

d)

reflection

90.

Hans observed properties of four different waves and recorded observations about each one in his chart.

Which statement is best supported by the table?

a)

Wave W is being reflected, Wave X is being refracted, and waves Y and Z are being diffracted.

b)

Wave X is being diffracted, Wave Z is being reflected, and waves Y and W are being refracted.

c)

Wave X is being reflected, Wave Z is being refracted, and waves Y and W are being diffracted.

d)

Wave W is being diffracted, Wave X is being reflected, and waves Y and Z are being refracted.

91.

Which one of the following diagrams represents the highest FREQUENCY wave?

a)

A

b)

B

c)

C

d)

D

92.

Which one of the following diagrams represents the

longest WAVELENGTH wave?

a)

A

b)

B

c)

C

d)

D

93.

Which one of the following diagrams represents the highest amplitude of wave?

a)

A

b)

B

c)

C

d)

D

94.
A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
95.
Total distance divided by total time is
a)
average speed
b)
constant speed
c)
instantaneous speed
d)
acceleration
96.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
97.
What is the person doing from 5 seconds to 10 seconds?
a)
Walking 
b)
Running
c)
Standing Still 
d)
Walking Fast
98.
which point has the most potential energy
a)
G
b)
f
c)
b
d)
a
99.

What is mass?

a)

the amount of pounds something weighs

b)

the amount of particles in an object

c)

how far an object moves

100.

You get tackled while playing football. Which player would cause you to move the greatest distance once they collide with you?

a)

Billy Bob: 20 kg

b)

Jim Bob: 50 kg

c)

Bobby Bill: 70 kg

101.

The graph shows the change in kinetic energy of a 1 kg object as the speed of the object increases from 1 m/s to 5 m/s.

Which graph correctly shows the change in kinetic energy of the object if the speed is further increased to 6 m/s?

a)
b)
c)
d)
102.

The table shows the kinetic energy of five balls of equal mass moving with different speeds.

Which two balls have the greatest speeds?

a)

Ball 1

b)

Ball 2

c)

Ball 3

d)

Ball 4

e)

Ball 5

103.

The table shows the masses, speeds, and measured values of the kinetic energy of four objects. Based on the table, what can be concluded about kinetic energy?

a)

Kinetic energy of an object increases with an increase in mass of the object.

b)

Kinetic energy of an object increases with a decrease in speed of the object.

c)

Kinetic energy of an object does not vary with a change in mass of the object.

d)

Kinetic energy of an object does not vary with a change in speed of the object.

104.

What is the net force

a)

10 N to the right

b)

30 N to the right

c)

10 N to the left

d)

30 N to the left

105.

What is the net force?

a)

15 N

b)

5 N to the left

c)

5 N to the right

d)

15 N left

106.

What is the net force?

a)

38 N to the left

b)

38 N to the right

c)

2 N to the left

d)

2N to the right

107.

What is the net force?

a)

6 N to the right

b)

9 N to the right

c)

9 N to the left

d)

15 N to the left

108.

What is the net force?

a)

19 N to the right

b)

4 N to the left

c)

7 N to the right

d)

3 N to the right

109.

What is the net force?

a)

25 N

b)

10 N down

c)

5 N up

d)

10 N up

110.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move in both directions. 

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