Quiz about 8th Grade Science Review

Question 1

Why is it harder for the boy in Image B to get down the hill?

Accepted Answer

Friction

Answer

Motion

Answer

Work

Answer

Displacement

Question 2

Which force produces a change in motion?

Accepted Answer

unbalanced force

Answer

balanced force

Answer

gravitational force

Answer

frictional force

Question 3

If these boys are pulling with the same amount of force.  What will happen?

Accepted Answer

They will not move at all.

Answer

The boy in blue will win.

Answer

The boy in red will win.

Answer

Both will fall down.

Question 4

Which of the following statements is true?

Accepted Answer

Unbalanced forces cause a change in motion.

Answer

Balanced forces cause a change in motion.

Answer

Forces do not effect the change in motion.

Question 5

How could you change the height of an object to increase GPE (gravitational potential energy)?

Accepted Answer

Raise the object farther off the ground

Answer

Make the object larger

Answer

Lower the object towards the ground

Answer

Make the object smaller

Question 6

How could you change the mass of an object DECREASE GPE (gravitational potential energy)?

Accepted Answer

Decrease the object's mass

Answer

Increase the object's height

Answer

Increase the object's mass

Answer

Decrease the object's height

Question 7

Gravitational potential energy depends on the ________ and ________ of the object.

Accepted Answer

Height and mass

Answer

Friction and movement

Answer

Mass and Movement

Answer

Height and Friction

Question 8

What is the net force?

Accepted Answer

400 N Down

Answer

400 N Up

Answer

- 400 N Down

Answer

800 N Down

Question 9

Where do hot spots occur?

Accepted Answer

in the middle of tectonic plates

Answer

Boundaries of earths tectonic plates

Answer

At the peak of the volcano

Answer

in a geyser

Question 10

Which island was formed by a hot spot?

Accepted Answer

Hawaii

Answer

Bahamas

Answer

Fiji

Answer

The Philippians

Question 11

What occurs when faults slip past each other?

Accepted Answer

earthquakes

Answer

hot springs

Answer

volcanoes and geysers

Question 12

Which of the following is the MAIN cause of a tsunami?

Accepted Answer

Earthquakes

Answer

Hurricanes

Answer

Ocean Vents

Question 13

What kind of plate boundary is shown here?

Accepted Answer

divergent

Answer

convergent

Answer

transform

Answer

subducting

Question 14

What kind of plate boundary is shown here?

Accepted Answer

transform

Answer

divergent

Answer

convergent

Answer

submergent

Question 15

What kind of plate boundary is shown here?

Accepted Answer

convergent

Answer

divergent

Answer

transform

Answer

strike slip

Question 16

What type of plate boundary creates deep ocean trenches?

Accepted Answer

Convergent: ocean to continent

Answer

Convergent: continent to continent

Answer

Divergent: ocean and ocean

Answer

Divergent: land and land

Question 17

A subduction zone is formed...

Accepted Answer

when one tectonic plate sinks below another

Answer

at every type of convergent plate boundary

Answer

at every type of divergent plate boundary

Answer

at transform boundaries

Question 18

In which type of boundary do the plates move away from each other?

Accepted Answer

divergent

Answer

convergent

Answer

normal

Answer

transform

Question 19

Plates slide past one another at ____________ boundaries.

Accepted Answer

transform

Answer

divergent

Answer

convergent

Answer

submergent

Question 20

Plates move towards one another at ______________ boundaries.

Accepted Answer

convergent

Answer

divergent

Answer

transform

Answer

detergent

Question 21

When alleles are different (ex: Yy)

Accepted Answer

heterozygous

Answer

dominant

Answer

homozygous

Question 22

When alleles are the same (ex: YY or yy)

Accepted Answer

homozygous

Answer

heterozygous

Answer

recessive

Question 23

the physical look of a trait (what do you see?)

Accepted Answer

phenotype

Answer

genotype

Answer

allele

Question 24

the genetic code for the gene (YY, Yy, yy)

Accepted Answer

genotype

Answer

phenotype

Answer

allele

Question 25

A grizzly bear survives because he is well-adapted to his environment. When he reproduces he passes those desirable traits to his offspring. This process is called...

Accepted Answer

Natural Selection

Answer

Selective Breeding

Answer

Random mutations

Answer

Variations in a species

Question 26

If Easter eggs were living species of organisms, their different colors would be considered:

Accepted Answer

Variations

Answer

Adaptations

Answer

Different species

Answer

Extinct species

Question 27

The peppered moth's color camouflaged it on the light colored tree bark. It's color was an example of a/n

Accepted Answer

Adaptation

Answer

Variation

Answer

Dominant trait

Answer

Recessive trait

Question 28

Why might it be helpful for a species to have a lot of variations?

Accepted Answer

If the environment changes, they might be better able to adapt

Answer

They can't be seen by predators

Answer

It is helpful in asexual reproduction

Answer

They don't recognize each other

Question 29

Which beak is probably best suited to crack open nuts?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 30

small islands made of sediment called deltas form at the end of rivers

Accepted Answer

Deposition

Answer

Mechanical Weathering

Answer

Chemical Weathering

Answer

Erosion

Question 31

A stream widens into a river over time as the sides get worn away

Accepted Answer

Erosion

Answer

Mechanical Weathering

Answer

Chemical Weathering

Answer

Deposition

Question 32

Removing Sediment from a location

Accepted Answer

Erosion

Answer

Mechanical Weathering

Answer

Chemical Weathering

Answer

Deposition

Question 33

Adding sediment to a location

Accepted Answer

Deposition

Answer

Mechanical Weathering

Answer

Chemical Weathering

Answer

Erosion

Question 34

Water gets into cracks of a rock, when the water freezes it breaks up the rock

Accepted Answer

Mechanical Weathering

Answer

Chemical Weathering

Answer

Erosion

Answer

Deposition

Question 35

Which layer of the Earth is the most dense?

Accepted Answer

inner core

Answer

crust

Answer

mantle

Answer

outer core

Question 36

The soft layer of the mantle on which the tectonic plates move

Accepted Answer

Asthenosphere

Answer

Outer Core

Answer

Mantle

Answer

Mesosphere

Question 37

The solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle

Accepted Answer

Lithosphere

Answer

Mesosphere

Answer

Mantle

Answer

Crust

Question 38

Temperature _____________________ as you go deeper into the earth.

Accepted Answer

increases

Answer

decreases

Answer

goes up and down depending on the layer

Answer

stays the same

Question 39

Pressure ______________________ as you go deeper into the Earth

Accepted Answer

increases

Answer

decreases

Answer

goes up or down depending on the layer

Answer

stays the same

Question 40

What are the two kinds of crust that the Earth has?

Accepted Answer

Oceanic and Continental Crust

Answer

Oceanic and Crustatious Crust

Answer

Optic and Continental Crust

Question 41

Why does sexual reproduction result in more genetic diversity than asexual reproduction?

Accepted Answer

Traits from two parents are combined.

Answer

More organisms reproduce this way.

Answer

Offspring grow in different environments.

Answer

Offspring come from identical parents.

Question 42

Organisms that reproduce asexually generally have offspring that are

Accepted Answer

genetically identical.

Answer

unicellular.

Answer

multicellular.

Answer

genetically varied.

Question 43

Heat transfer by convection is caused by differences in what two things:

Accepted Answer

Temperature and density

Answer

Thickness and material

Answer

Weight and electricity

Question 44

Earthquakes release these which let us study what the Earth is made out of

Accepted Answer

Seismic Waves

Answer

Tectonic Plates

Answer

Plateaus

Answer

P Waves

8th Grade Science Review

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