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8th Grade Science LEAP Study Questions

Total questions: 79

Worksheet time: 3605secs

Name
Class
Date
1.

Alfred Wegener named his single supercontinent ____________, which means "all Earth" in ancient Greek.

a)

Pandora

b)

Gandowandaland

c)

Pangea

d)

Percia

2.

True or False: The continental plates move so quickly that we can feel them.

a)

True

b)

False

3.
Associated with transform boundaries.
a)
Volcanoes
b)
mountains
c)
trenches
d)
earthquakes
4.
A location where two tectonic plates collide is known as a _________ boundary.
a)
Convergent
b)
Divergent
c)
Transform
d)
Spreading
5.

Which layer of Earth flows slowly and causes the crust to move?

a)

Crust

b)

Mantle

c)

Inner Core

d)

Outer core

6.

Subduction means.....

a)

one plate goes under another plate

b)

two plates slide past each other

c)

two plate collide and form folded mountains

7.

Sea-floor spreading explains how.....

a)

new crust is created at a divergent boundary

b)

volcanoes are formed on continents

c)

deep sea trenches are formed

8.

An opening on the Earth's crust through which hot molten rock flows out from deep inside the Earth.

a)

Volcano

b)

Fault line

c)

Fold

d)

Crater

9.
Which of the following causes Earth's tectonic plates to move?
a)
Energy from the Sun
b)
Magnetic Pole Reversal
c)
Convection currents in the mantle
d)
Faults in Mountain Ranges
10.
When you leave your cold drink outside, the glass may have water drops on it.  This is an example of...
a)
condensation
b)
evaporation
c)
precipitation
d)
estuary
11.
Which form of energy causes water to boil?
a)
sound energy
b)
mechanical energy
c)
thermal energy
d)
light energy
12.
Which process does the diagram show?
a)
freezing
b)
boiling
c)
evaporation
d)
melting
13.

Hot things have ____________ thermal energy than cold things

a)

more

b)

less

c)

same

d)

potato

14.

Cold things often have a _________ kinetic energy because_______

a)

lower; particles are moving around less

b)

lower; particles are moving around more

c)

higher; particles are moving around the same

d)

higher; particles do not move

15.

As temperature increases, molecules _____________

a)

move slower

b)

move the same

c)

move faster

d)

stop moving

16.

Nash puts his cold Coke Slurpee on to the metal roof of his mom's car. Describe the heat transfer that takes place.

a)

Heat is transferred from the car's roof into the Slurpee and increases the temperature of the Slurpee.

b)

Heat is transferred from the Slurpee into the roof and increases the temperature of the roof.

c)

The Slurpee stays the same temperature until it is completely gone.

d)

The roof doesn't change temperature due to the fact that it sits in the sun all day.

17.

Which of the following describes what is meant by Natural Selection?

a)

An organism will survive no matter what its adaptations may be

b)

An organism with adaptations that do not allow it to reproduce as effectively as others will survive.

c)

An organism with adaptations that allow it to obtain resources and reproduce more effectively than others will survive.

d)

No organisms will survive.

18.
Which best describes an adaptation?
a)
A trait that helps an organism to survive in its environment.
b)
A trait that the organism can change when he wants.
c)
A trait that does not help the organism to survive in its environment.
d)
The place where an organism lives.
19.
What does the term variation mean?
a)
The same traits in a population.
b)
The different ways that traits are expressed in a population.
c)
The same ways traits are expressed in a population.
d)
The place where an animal lives.
20.
What does the term species mean?
a)

All the different organisms in a population

b)

A community of organisms.

c)

Organisms of the same kind that can reproduce with one another and create fertile young.

d)

Organisms of different kinds that can reproduce with one another.

21.
Which of the following variations would help members of a rabbit population survive if the climate turned very hot?
a)
Thinner fur
b)
Ability to run faster
c)
Ability to jump higher
d)
Ability to eat more
22.
Charles Darwin's work contributed to the theory of Natural Selection
a)
True
b)
False
23.
Animals are born with their adaptations due to genes.
a)
True
b)
False
24.
Animals are able to pick and choose their adaptations.
a)
True
b)
False
25.
Variations are differences between individuals in a population.
a)
True
b)
False
26.
Mutations are a source of variations.
a)
True
b)
False
27.

Mutations are always harmful to an organism's survival.

a)

True

b)

False

28.

In Survival of the Fittest Darwin believed

a)

The organism with adaptations that allow it to fit into its environment better is the one that will survive and reproduce.

b)

The organisms without the adaptations to fit into its environment is the one that will survive.

29.

Over time natural selection can change how often a trait is seen within a population.

a)

True

b)

False

30.

Which of the following is an environmental pressure that might affect the survival of a species?

a)

Predators

b)

Seasonal Changes

c)

Disease

d)

All of the Above

31.

Some species produce an over abundance of eggs because not all of them will survive.

a)

True

b)

False

32.

What was the variation in the Peppered Moth that affected their survival?

a)

Size

b)

Aggressiveness

c)

Color

d)

Species

33.

Before the industrial revolution the birds were eating more black moths. After the industrial revolution the birds started eating more white moths. Why

a)

The birds thought the white moths tasted better.

b)

There were not any black moths to eat

c)

The white moths stood out on the dark trees so the birds could see them easier.

34.

Animals and plants can choose to adapt to their environment and the effects of natural selection can usually be seen in a very short time.

a)

True

b)

False

35.

Animals compete for resources in the environment. This will affect an organism's survival.

a)

True

b)

False

36.

Which of the following are factors that affect the survival of species?

a)

Overproduction

b)

Variation

c)

Competition

d)

All of the above

37.

Adaptations can be:

a)

camouflage

b)

ability to survive cold weather

c)

hunting skills

d)

all of the above

38.

What is most likely to happen to moth populations in the picture shown?

a)

Light moths--hunted easily, dark moths--population increase

b)

Dark moths--hunted easily, dark moths--population increase

c)

Light moths--hunted easily, light moths--population increase

d)

Lights moths will change their color to match dark moths.

39.

Which model is demonstrating what molecules in a liquid look like.

a)
b)
c)
40.

Which model is demonstrating what molecules in a gas look like.

a)
b)
c)
41.
Which direction is heat flowing in the picture?
a)
from the hand to the ice
b)
from the ice to the hand
c)
heat is not being transferred
d)
there is no way to tell
42.

Which model is demonstrating what molecules in a solid look like.

a)
b)
c)
43.
In a lava lamp, the warm part rises and the cool part sinks.  This is an example of 
a)
heat computation
b)
convection
c)
conduction
d)
radiation
44.
The process of sediment being glued together is called
a)
cementation
b)
compaction
c)
cross section
d)
erosion
45.
A diagram that shows what the inside of something looks like is called _________.
a)
cementation
b)
compaction
c)
cross section
d)
erosion
46.
The process of sediment being buried and pressed together is called ______________.
a)
cementation
b)
compaction
c)
cross section
d)
erosion
47.
What type of rock is formed when magma cools and becomes solid?
a)
igneous
b)
metamorphic
c)
sedimentary
d)
candy
48.
What is the hot liquid rock below the surface of the Earth called?
a)
magma
b)
matter
c)
energy
d)
mineral
49.
What do we call anything that has mass and takes up space?
a)
matter
b)
magma
c)
energy
d)
erosion
50.
A region of rock that formed together as a single rock type is called a ___________________.
a)
glacier
b)
sample
c)
mineral
d)
rock formation
51.
What are small pieces of rock?
a)
sample
b)
sediment
c)
subduction
d)
slices
52.
What rock type is formed when sediment is pressed and glued together?
a)
igneous
b)
metamorphic
c)
sedimentary
d)
candy
53.

An example of sediment is......?

a)

lava

b)

Tiny pebbles and sand

c)

basalt

d)

granite

54.
This rock formed when bits of other rocks became pressed into a solid. What type of rock is it?
a)
Sedimentary Rock
b)
Metamorphic Rock
c)
Igneous Rock
55.

The rock type that forms when magma cools and becomes solid is

a)

metamorphic

b)

igneous

c)

sedimentary

d)

marble

56.

If a sedimentary rock is uplifted, will it become a new type of rock?

a)

Yes

b)

No

57.

Which type of rock is formed when heat or pressure deep underground changes existing rock?

a)

igneous

b)

metamorphic

c)

sedimentary

d)

marble

58.

What is the process of rock breaking down into smaller pieces due to wind or moving water?

a)

weather

b)

weathering

c)

washer

d)

wash out

59.

The process by which rock material moves under earth's outer layer and into the mantle due to plate motion is

a)

abduction

b)

subduction

c)

reduction

d)

action

60.

The process by which all the rock formations of a region are pushed up due to plate motion is called

a)

pushed up

b)

rock lift

c)

uplift

d)

messed up

61.

When a rock is subducted it is exposed to energy from

a)

Sun

b)

Earth's interior

62.

When a rock is uplifted it is exposed to energy from the

a)

Sun

b)

Earth's interior

63.
What are Chemical Reactions?
a)
It's when you mix substances.
b)
a process in which atoms rearrange to form new substances
c)
When something bubbles.
d)
letter and numbers showing the types and number of atoms
64.
Where do we usually find regional metamorphism?
a)
ocean floor
b)
mountain
c)
plate boundaries
d)
deserts
65.

What are the products of cellular respiration? Choose 3.

a)

water

b)

ATP

c)

Oxygen

d)

Sunlight

e)

Carbon Dioxide

66.

The process in which a cell harvests energy from glucose and makes it into usable energy for the body is called-----

a)

cellular fermentation

b)

anaerobic respiration

c)

aerobic fermentaion

d)

cellular respiration

67.

During cellular respiration, energy is released from food. What else does the cell need for this process to take place.

a)

carbon dioxide

b)

oxygen

c)

sunlight

d)

nitrogen

68.

Most energy that is released during respiration is produced in the ____

a)

sky

b)

mitochondria

c)

stoma

d)

chloroplast

69.

What happens to the speed of evaporation of water when the temperature increases?

a)

speed of evaporation decreases

b)

speed of evaporation increases

c)

speed of evaporation stays the same

70.

The law of conservation of mass states that the total mass of the reactants is ________.

a)

Equal to the mass of one of the products but not the other.

b)

Less than the mass of the products.

c)

Greater than the total mass of the products.

d)

Equal to the total mass of the products.

71.

Looking at the chemical equation pictured, how many CARBON atoms are there on each side?

a)

1

b)

2

c)

3

d)

4

72.

Looking at the chemical equation pictured, how many OXYGEN atoms are there on each side?

a)

1

b)

2

c)

3

d)

4

73.

Looking at the chemical equation pictured, how many HYDROGEN atoms are there on each side?

a)

1

b)

2

c)

3

d)

4

74.

Looking at the same chemical equation from above, which statement is true?

a)

The total number of atoms in the reactants in less than the total number of atoms in the products.

b)

The properties of the reactants are the same.

c)

The amount of matter in the reactants is the same as the amount of the matter in the products.

75.

What causes water vapor to rise into the atmosphere?

a)

The ocean

b)

The Sun's energy

c)

The force of gravity

76.

Roasting marshmallows is an example of a ______________ change since it is changing color and is irreversible

a)

chemical

b)

physical

c)

state

77.

Evaporation is ...

a)

A liquid turning into a solid

b)

A liquid turning into a gas

c)

A gas turning into a liquid

d)

a solid turning into a liquid

78.

Which is an example of CONDENSATION?

a)

rain falling

b)

boiling water

c)

clouds forming

d)

a river flowing

79.

Which is an example of Runoff?

a)

rain falling

b)

boiling water

c)

clouds forming

d)

a river flowing

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