Quiz about 8th grade Final

Question 1

The imaginary line running through the center of Earth.

Accepted Answer

axis

Answer

moon

Answer

constellation

Answer

orbit

Question 2

What causes Earth's seasons?

Accepted Answer

the tilt of Earth's axis

Answer

Earth's rotation

Answer

the revolution of the Moon

Answer

Earth's distance from the Sun

Question 3

The rotation of Earth on its axis causes the pattern of _____.

Accepted Answer

night and day

Answer

constellations

Answer

Earth's seasons

Answer

the phases of the moon

Question 4

It takes Earth _________ to make one complete rotation on its axis.

Accepted Answer

24 hours

Answer

365 days

Answer

28 days

Answer

24 days

Question 5

It takes Earth _____________ to make one revolution or orbit around the Sun.

Accepted Answer

365 days

Answer

365 hours

Answer

28 days

Answer

24 hours

Question 6

It takes about _____________ for the moon to go through all of its phases.

Accepted Answer

28 days

Answer

365 days

Answer

24 hours

Answer

24 days

Question 7

a light year is the distance

Accepted Answer

light travels in one year

Answer

light travels in two years

Answer

humans can travel in one year in space

Answer

none of the above

Question 8

the imaginary line going from the North and South Poles through the middle of the Earth

Accepted Answer

axis

Answer

equator

Answer

time zone

Question 9

^{Which moon phase?}

Accepted Answer

new moon

Answer

waning gibbous

Answer

waxing gibbous

Answer

waning crescent

Question 10

^{Which moon phase?}

Accepted Answer

Waxing crescent

Answer

waxing gibbous

Answer

waning gibbous

Question 11

^{Which moon phase?}

Accepted Answer

Waxing gibbous

Answer

Waning gibbous

Answer

Waning crescent

Question 12

^{Which moon phase?}

Accepted Answer

Full moon

Answer

waxing crescent

Answer

waning crescent

Question 13

^{Which moon phase?}

Accepted Answer

waning gibbous

Answer

new moon

Answer

waning crescent

Question 14

^{Which moon phase?}

Accepted Answer

waning crescent

Answer

waxing crescent

Answer

waning gibbous

Question 15

A[n] ______________ tide occurs when the sun is at right angles to the line between Earth and the moon.

Accepted Answer

neap

Answer

high

Answer

low

Answer

spring

Question 16

A[n] ___________ tide occurs when the sun, Earth, and the moon are nearly in a line.

Accepted Answer

spring

Answer

high

Answer

low

Answer

neap

Question 17

The bulge of water on the side of the Earth closest to the moon produces ___________.

Accepted Answer

high tide

Answer

low tide

Answer

neap tide

Answer

spring tide

Question 18

Which season is taking place in the Northern Hemisphere in Position 3?

Accepted Answer

Summer

Answer

Winter

Answer

Spring

Answer

Fall

Question 19

Which season is taking place in the Northern Hemisphere in Position 4?

Accepted Answer

Fall

Answer

Winter

Answer

Spring

Answer

Summer

Question 20

What happens when the area in which you live tilts away from the sun?

Accepted Answer

It is winter.

Answer

It is summer.

Answer

It is spring.

Answer

It is fall.

Question 21

A solar eclipse only occurs during which moon phase?

Accepted Answer

New Moon

Answer

1st Quarter

Answer

Full Moon

Answer

3rd Quarter

Question 22

Which type of eclipse is shown in this picture?

Accepted Answer

Solar Eclipse

Answer

Orbit

Answer

Lunar Eclipse

Answer

Total Eclipse

Question 23

Which type of eclipse is shown in the diagram?

Accepted Answer

Lunar Eclipse

Answer

Solar Eclipse

Answer

Total Eclipse

Answer

Partial Eclipse

Question 24

____________ is anything that has mass and takes up space.

Accepted Answer

matter

Answer

compound

Answer

particle

Answer

subatomic

Question 25

All mater is composed of __________.

Accepted Answer

atoms

Answer

compounds

Answer

water

Answer

H2O

Question 26

_____________ are the smallest unit of matter that retains the identity of the substance.

Accepted Answer

atoms

Answer

compounds

Answer

water

Answer

H2O

Question 27

A proton has a ___________ charge.

Accepted Answer

positive

Answer

negative

Answer

neutral

Question 28

What so the blue circles represent?

Accepted Answer

neutrons

Answer

protons

Answer

electrons

Answer

nucleus

Question 29

What do the red circles represent?

Accepted Answer

protons

Answer

neutrons

Answer

electrons

Answer

nucleus

Question 30

What do the black circles represent?

Accepted Answer

electrons

Answer

protons

Answer

neutrons

Answer

nucleus

Question 31

Why does the Earth orbit the Sun and not a planet in the solar system?

Accepted Answer

The Sun is more massive than the planets so it's mass causes the gravitational pull.

Answer

It just happened that way.

Answer

The Earth pulls the Sun toward it  because it is so massive.

Answer

The Earth is closer than the other planets so the distance causes the gravitational pull.

Question 32

If you look up at 12:00 pm on the summer solstice where would you see the sun?

Accepted Answer

Directly overhead

Answer

It would be setting.

Answer

You wouldn't see it because it's night.

Answer

On the horizon

Question 33

Suppose a pitcher threw a ball that traveled 60 m in 2 seconds.  How fast did he pitch the ball?

Accepted Answer

30 m/s

Answer

120 m/s

Answer

60 m/s

Answer

None of the above are correct.

Question 34

Question 34.

Accepted Answer

0.2 m/s

Answer

0.5 m/s

Answer

5.0 m/s

Answer

10.0 m/s

Question 35

Question 35.

Accepted Answer

The toy train moves forward at a constant speed, slows down, and then stops.

Answer

The toy train speeds up while going forward and then slows down.

Answer

The toy train slows down while going forward and then moves backward.

Answer

The toy train moves forward at an increasing speed, stops, and then moves forward.

Question 36

A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?

Accepted Answer

The chemical energy stored in the match changed to thermal energy and light energy.

Answer

The thermal energy stored in the match changed to light energy and chemical energy.

Answer

The light energy and thermal energy stored in the match changed to mechanical energy.

Answer

The light energy and thermal energy stored in the match changed to chemical energy.

Question 37

Which image represents winter for you?

Accepted Answer

Position 4, because North America is tilted away from the sun

Answer

Position 1, because North America receives the most direct sun

Answer

Position 2, because North America is tilted toward the sun

Answer

Position 3, because North America is parallel to the sun

Question 38

(8.5D) The chemical formula for sodium sulfate is Na₂SO₄. How many sulfur atoms are in the formula for sodium sulfate?

Accepted Answer

1

Answer

2

Answer

6

Answer

7

Question 39

(8.5E) The scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. For safety purposes, the scientist sprinkled some baking soda (NaCO₃) onto the spill. Which observation would provide the best evidence that a chemical reaction occurred?

Accepted Answer

The baking soda and hydrochloric acid combined, and bubbles formed.

Answer

The baking soda absorbed the hydrochloric acid.

Answer

Some of the baking soda dissolved in the hydrochloric acid.

Answer

The hydrochloric acid evaporated, leaving only the baking soda.

Question 40

CaCO₃ ---> CaO + CO₂
In the chemical reaction shown above, the products are best classified as-- (6.5C)

Accepted Answer

two compounds

Answer

two elements

Answer

one element and one compound

Answer

two compounds and one element

Question 41

(8.5B) A chemist is identifying the elements present in a sample of seawater. What characteristic of an element's atoms always determines the element's identity?

Accepted Answer

The number of protons

Answer

The number of neutrons

Answer

The location of valence electrons

Answer

The number of valence electrons

Question 42

(6.5C) The chemical equation shown below represents a reaction that produces fuel for certain cars.
CO + H₂O ---> CO₂ + H_{2
Which of these represents an element?}

Accepted Answer

H2

Answer

CO

Answer

H2O

Answer

CO2

Question 43

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

Accepted Answer

7 g/cm3

Answer

7 mL

Answer

28 g/cm3

Answer

1/7 g/cm3

Question 44

True or False: The density of a specific type of material never changes.

Accepted Answer

True

Answer

False

Question 45

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density?

Accepted Answer

2 g/cm3

Answer

8 g/cm3

Answer

1/2 g/cm3

Answer

24 g/cm3

Question 46

A can of Coke will sink in a bowl of water. A can of Diet Coke will float in a bowl of water. What does this tell you about the density of the Diet Coke?

Accepted Answer

it is smaller than 1

Answer

it is bigger than 1

Answer

it is equal to 1

Answer

it is equal to -1

Question 47

Why do ice cubes float in a  glass of water?

Accepted Answer

the water is more dense than the ice cubes

Answer

the ice cubes are more dense than the water

Answer

the water is more dense than the glass

Answer

the ice is more dense than the glass

Question 48

Put the liquids in order from most dense to least dense?

Accepted Answer

4, 3, 2, 1

Answer

1, 2, 3, 4

Answer

3, 4, 2, 1,

Answer

4, 3, 1, 2

Question 49

Which box has a higher density?

Accepted Answer

Box A

Answer

Box B

Answer

cannot be determined

Answer

they are the same

Question 50

If you cut a wooden block in half, each half would have

Accepted Answer

The same density as the original piece

Answer

Half the density of the original piece

Answer

Twice the density of the original piece

Answer

No density at all

Question 51

Volume is ...

Accepted Answer

The amount of space an object occupies.

Answer

Mass/Volume

Answer

The amount of matter in an object.

Answer

Anything that has mass and occupies space.

Question 52

The amount of matter an object has.

Accepted Answer

Mass

Answer

Weight

Answer

Volume

Answer

Density

Question 53

Water changes its state of matter when heat is added or taken away.  When water reaches its boiling point the particles-

Accepted Answer

are moving more rapidly

Answer

are closer together

Answer

stay the same

Answer

are moving more slowly

Question 54

A gas

Accepted Answer

has fast-moving particles

Answer

has a definite shape but no definite volume

Answer

has a definite volume but no definite shape

Question 55

Change over time...

Accepted Answer

Evolution

Answer

Variation

Answer

Adaptation

Answer

Natural Selection

Question 56

A helpful trait that makes survival easier is called...

Accepted Answer

an adaptation

Answer

evolution

Answer

mutation

Answer

natural selection

Question 57

The process by which individuals that are better adapted to their environment are more likely to survive and reproduce than other members of the same species.

Accepted Answer

natural selection

Answer

evolution

Answer

adaptation

Answer

species

Question 58

How is natural selection in the evolution of long necks in giraffes best explained?

Accepted Answer

Giraffes with longer necks survived because they were better suited to the environment.

Answer

Shorter-necked giraffes were killed by long-necked giraffes.

Answer

Giraffe necks grew longer because of the bone structure of the animals

Answer

Long-necked giraffes mated only with other long-necked giraffes.

Question 59

True or false: you have evolved since you were in 6th grade.

Accepted Answer

False: only entire species (not individuals) can evolve

Answer

True. I am much smarter and taller.

Answer

True

Answer

False

Question 60

Why are advantageous traits more likely to be passed onto offspring?

Accepted Answer

Because they are more likely to survive and reproduce.

Answer

Because they come from dominant alleles.

Answer

Because they come from recessive alleles.

Answer

Because the trait is an acquired phenotype.

Question 61

Mutations are a change in what?

Accepted Answer

DNA

Answer

tRNA

Answer

genotype

Answer

phenotype

Question 62

the passing of genetic traits from parent to offspring.

Accepted Answer

heredity

Answer

trait

Answer

gene

Answer

allele

Question 63

AA and Aa always show up as

Accepted Answer

dominant

Answer

recessive

Question 64

Aa, DD, bB, yy are all examples of

Accepted Answer

genotypes

Answer

phenotypes

8th grade Final

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science