wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

8th Grade Science

Total questions: 100

Worksheet time: 2hrs 43mins

Name
Class
Date
1.

What happens to an iron nail when it rusts?

a)

Oxygen in the air dissolves part of the iron

b)

The nail becomes lighter because the rust heats the iron

c)

The nail becomes heavier because rust weighs more than iron

d)

Iron reacts with oxygen in the air, creating iron oxide on the surface of the nail

2.

Which formula listed below correctly finds density?

a)

D=v/m

b)

D=m/v

c)

D=g/v3

d)

D=g/v

3.

Mass is conserved in both physical and chemical changes.

a)

False

b)

True

4.

Change of state is a physical change.

a)

True

b)

False

5.

Adding an electron to an atom results in an isotope.

a)

True

b)

False

6.

The atomic number is the number of protons in an atom of an element.

a)

True

b)

False

7.

The positively charged center of the atom is called the _______

a)

electron cloud

b)

neutron

c)

nucleus

d)

compound

8.

The negative particle in an atom is the ____________________

a)

ion

b)

nucleus

c)

neutron

d)

electron

9.

Which particles make up the nucleus?

a)

electron and proton

b)

proton and positron

c)

neutron and proton

d)

electron and neutron

10.

The freezing of water is a chemical change.

a)

False

b)

True

11.

Flammability is a ________ property.

a)

physical

b)

chemical

c)

private

d)

illegal

12.

Mass is the amount of matter in an object. _______ is the gravitational pull on the mass of the object.

a)

density

b)

volume

c)

weight

d)

magnetism

13.

A spring scale is used to measure which physical property.

a)

mass

b)

density

c)

volume

d)

weight

14.

A graduated cylinder is used to measure which physical property?

a)

mass

b)

weight

c)

volume

d)

speed

15.

A digital scale is used to measure which physical property?

a)

speed

b)

volume

c)

mass

d)

weight

16.

a triple beam balance is used to measure which physical property?

a)

volume

b)

weight

c)

mass

d)

length

17.

Which physical property explains why copper is often used in electric wiring?

a)

density

b)

mass

c)

reactivity

d)

conductivity

18.

If the formula for density is mass/volume then what is the density of an element that has a mass of 8 g and volume of 2 ml?

a)

4 g/cm3

b)

3 g/cm3

c)

40 g/cm3

d)

30 g/cm3

19.

True or False: Mass and weight are the same thing.

a)

True

b)

False

20.

True or False: If you take an object from Earth and place it on the moon, its density will not change.

a)

true

b)

false

21.

True or False: If you take an object from Earth and place it on the moon, its mass will change.

a)

True

b)

False

22.

True or False: If you take an object from Earth and place it on the moon, its weight will change.

a)

True

b)

False

23.

Density is expressed as ____________

a)

mass/weight

b)

weight/volume

c)

volume/mass

d)

mass/volume

24.

Which are physical properties of matter?

a)

mass

b)

conductivity

c)

volume

d)

boiling/melting point

e)

all of these

25.

The ability or inability of a substance to combine with or change into one or more new substances is called a ____________

a)

physical property of matter

b)

chemical property of matter

c)

state of matter

d)

it doesn't matter

26.

What is photosynthesis?

a)

how fungi obtain energy

b)

The process in which green plants use oxygen to make carbon dioxide

c)

the process in which green plants use carbon dioxide to make oxygen

d)

the process of absorbing energy by touching things

27.
Where does photosynthesis take place? 
a)
in the chloroplast of a plant cell
b)
in the mitochondria of a plant cell
c)
in the mitochondria of an animal cell
d)
in the chloroplast of an animal cell
28.
What is the largest ecosystem on Earth? 
a)
savanah
b)
desert
c)
ocean 
d)
plain
29.

Which of the following is one of the biotic factors in a desert ecosystem as well a food protein source for humans?

a)

the Sun

b)

scorpions

c)

water

d)

sand

30.
Which of the following is an abiotic factor in a marine ecosystem? 
a)
grass
b)
whale
c)
water
d)
plankton
31.
In a picture of a water cycle what part of the cycle do clouds represent? 
a)
evaporation
b)
precipitation
c)
condensation
d)
runoff
32.

When an producer doesn't use the Sun in the production of its own food, it uses the process called ___________.

a)

photosynthesis

b)

cellular respiration

c)

evaporation

d)

chemosynthesis

33.

What might be an alternative food source for humans to get the (N) nitrogen that make the proteins required for life?

a)

water

b)

sunlight

c)

air

d)

insects

34.

Nitrogen is a essential part of ____.

a)

carbonation

b)

proteins and DNA

c)

the water cycle

d)

transpiration

35.

The atomic number of elements in the same period...

a)

increase from right to left

b)

increase from left to right

c)

have the same number of protons

d)

have the same number of electrons

36.

Elements in the same group have the same number of valence electrons and...

a)

have similar properties

b)

have the same number of energy levels

c)

are metals

d)

contain minerals

37.

What is the metalloid in group 13?

a)

sodium

b)

scandium

c)

boron

d)

aluminum

38.

When you have two letters in the element symbol, the second letter is always...

a)

uppercase

b)

lowercase

39.

What type of change occurs when the appearance changes, but the chemical composition stays the same?

a)

physical change

b)

chemical change

40.
The length of a day is determined by Earth's ______
a)
revolution
b)
temperature
c)
rotation
d)
orbit
41.
How would conditions on Earth change if Earth stopped rotating on its axis?
a)
The side of Earth facing the Sun would heat up and be in total light all the time.
b)
The side facing the Sun would get very cold and be in darkness.
c)
All places on Earth would experience darkness for half of the year.
d)
All places on Earth would experience light for half the year.
42.
How does the tilt of the Earth's axis affect how the Sun's rays strike the Earth?
a)
The part tilted toward the Sun gets more direct rays and heats up more
b)
The part tilted away from the Sun gets more direct rays and heats up more
c)
The part tilted away from the Sun gets indirect rays and heats up more
d)
The part tilted toward the Sun gets indirect rays and cools down more
43.
When it is Summer in the Northern Hemisphere, it is ______________ in the Southern Hemisphere.
a)
Easter
b)
Christmas
c)
Winter
d)
Spring
44.
Earth's temperature and hours of daylight stay most constant at the ________
a)
North Pole
b)
Antarctic
c)
Bermuda Islands
d)
Equator
45.
The Earth revolves around the Sun and the moon _________ around the Earth.
a)
rotates
b)
revolves
c)
skips
d)
bounces
46.
What affects the Earth's tides?
a)
Mars and Jupiter
b)
Sun and moon
c)
Pluto and Neptune
d)
Mercury and Saturn
47.
What are spring tides?
a)
tides in the Spring
b)
tides during new moon and full moon
c)
tides that are warm
d)
tides that cause flowers to bloom in the Spring
48.
What causes ocean tides?
a)
the Sun and moon's gravity
b)
the Sun and Earth's gravity
c)
ocean currents
d)
the revolution of the Earth around the Sun
49.
How often do tides change from high tide to low tide?
a)
16 hours
b)
8 hours
c)
6 hours
d)
24 hours
50.
Which phase of the moon results in the greatest difference between high and low tides?  This is also called the spring tide.
a)
crescent moon
b)
last quarter
c)
first quarter
d)
new moon
51.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
52.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
53.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
54.
Chloroplasts are...
a)
Structures of animal cells to produce ATP
b)
Organelles where lipids are elaborated
c)
Specialized structures of plants where food is made
d)
Waste organelle of plants
55.
Name the moon phase
a)
waning crescent
b)
waxing crescent
c)
waning gibbous
d)
waxing gibbous
56.
Name the moon phase
a)
waning crescent
b)
waxing crescent
c)
waning gibbous
d)
waxing gibbous
57.
Name the moon phase
a)
First Quarter
b)
Last Quarter
c)
New Moon
d)
Full Moon
58.
Name the moon phase
a)
First Quarter
b)
Last Quarter or (third quarter)
c)
New Moon
d)
Full Moon
59.
Name the moon phase
a)
First Quarter
b)
Last Quarter
c)
New Moon
d)
Full Moon
60.
The cycle of the moon lasts about a _.
a)
day
b)
year
c)
week
d)
month
61.
The moon ____________ around the Earth.
a)
orbits
b)
rotates
c)
up
d)
down
62.
The Earth's _______ is an imaginary line that goes from the North Pole to the South Pole.
a)
vernal equinox
b)
axis
c)
solar eclipse
d)
solar flare
63.

Which planets are visible from Earth without using a telescope?

a)

Venus, Mars and Jupiter

b)

Saturn, Pluto and Kree

64.

Venus experiences an intense greenhouse effect.

a)

True

b)

False

65.

____ is the largest planet in the solar system, is the fifth planet from the Sun, and has colorful clouds. One of its 17 moons is the most volcanically active object in the solar system. The planet has a liquid ocean and atmosphere comprised mostly of hydrogen and helium.

a)

Saturn

b)

Pluto

c)

Jupiter

d)

Nova Prime

66.

A comet develops a tail because of ____.

a)

energy from the Sun

b)

water from the oceans

c)

air in the sky

d)

lava from volcanoes

67.

What is the basic astronomical unit based on?

a)

the length of Jupiter's rings

b)

the distance between Earth and the Sun

c)

the distance between the Sun and moon

d)

the time it takes light to travel in 1 Earth year

68.

A light-year is _______

a)

the amount of light in 1 year

b)

the distance light travels in 1 Earth year

c)

the space between light and darkness

d)

the length of light from Earth to the moon

69.
Why do other stars appear so much smaller than the sun?
a)
They are much smaller
b)
They are so far away
c)
They are not as bright
d)
They are dwarf stars
70.
What is the name of the gas/dust clouds that form stars?
a)
Nebulas
b)
Protostars 
c)
Supernova
d)
Neutron Star
71.
True or False
Stars are really close together in outer space.
a)
True
b)
False
72.
What is the name of the explosion at the death of a massive star?
a)
Supergiant
b)
Supernova
c)
Black Hole
d)
Nebula
73.

The explosion that sent the universe flying out is called _____.

a)

The Big Bang

b)

The Milky Way

c)

The Solar System

d)

The Sun

74.

Since the Big Bang, and even today, the universe is still _____.

a)

Expanding

b)

Shrinking

c)

Cooking

d)

Spinning

75.
Which has the LONGEST wavelength and, therefore, the lowest frequency/energy
a)
Gamma Rays
b)
Radio Waves
c)
Visible Light
d)
Infrared rays
76.
Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy
a)
Radio waves
b)
Ultraviolet Rays
c)
Gamma Rays
d)
X-rays
77.
Which section of the spectrum is the ONLY one we can see?
a)
X-rays
b)
Visible Light
c)
Gamma Rays
d)
Ultraviolet Rays
78.
The shape of our Milky Way galaxy can be classified as ____________.
a)
Spiral
b)
Elliptical
c)
Irregular
d)
French
79.
What information can the Electromagnetic Spectrum help you obtain from stars?
a)
Distance
b)
Temperature
c)
Chemical Composition
d)
All of them.
80.
What is a galaxy?
a)
a star and it's surrounding planets
b)
billions of stars held together by gravity
c)
the big bang
d)
a cluster of nebulas
81.

a chunk of frozen gases, rock, ice, and dust that orbits around the sun

a)

comet

b)

asteroid

c)

meteoroid

d)

moon

82.

Which is another term for a homogeneous mixture?

a)

compound

b)

substance

c)

solution

d)

element

83.

Salt water is a ____________

a)

compound

b)

element

c)

molecule

d)

mixture

84.

Which below is a heterogeneous mixture?

a)

crushed concrete (limestone, sand, and other rocks)

b)

gold dust (Au)

c)

rusted iron (Fe2O3)

d)

distilled water (H2O)

85.

Which are the 2 kinds of substances?

a)

compound and element

b)

element and ion

c)

electron and proton

d)

nucleus and electron cloud

86.

True or False: Some substances are elements and some substances are compounds.

a)

false

b)

true

87.

Mixtures can be separated using _________ means.

a)

physical

b)

chemical

88.

Tap water that contains iron, magnesium, calcium, rocks, and other metals is ____________________

a)

an element

b)

a compound

c)

a mixture

d)

a delicious drink

89.

A ____________ dissolves a solute.

a)

solvent

b)

mixture

c)

solution

d)

substance

90.

pH is the _____________ of hydrogen.

a)

potential

b)

proton

c)

particle

d)

property

91.

Which is the neutral measure (water) on the pH scale?

a)

0

b)

3

c)

7

d)

10

92.

A strong acid is ______ on the pH scale.

a)

1.0

b)

10

c)

7.0

d)

6.5

93.

A _________ is any solution measured above 7 on the pH Scale

a)

hydroxide ion

b)

acid

c)

base

d)

mixture

94.

What is neutral on the pH Scale?

a)

acids

b)

bases

c)

water

d)

vinegar

95.

When 2 or more reactants combine, the result is called a _____________

a)

horse with no name

b)

product

c)

multiplier

d)

hydronium ion

96.

When you combine vinegar with baking soda, how do you know a chemical reaction took place?

a)

fire is produced

b)

gas is produced

c)

ice is produced

d)

smoke is produced

97.

When you prepare dinner both physical and chemical changes take place, which is a chemical change?

a)

cutting carrots

b)

boiling water

c)

toasting garlic bread

d)

peeling potatoes

98.

If you mix the acid vinegar with the base baking soda the products are a salt, water, and __________

a)

CO2 gas

b)

liquid nitrogen

c)

ice cream

d)

hydroxide

99.

Did the astronauts on Apollo 13 get to walk on the moon during that mission?

a)

no

b)

yes

100.

When did the Apollo 13 mission take place?

a)

After the first launch of the SpaceX Falcon Heavy rocket

b)

Before Neil Armstrong walked on the moon

c)

After we landed the astronauts on Mars

d)

Before the last astronaut walked on the moon

Similar Resources on Wayground

Chippewa Life Science End of Year Challenge!

100 questions

Chippewa Life Science End of Year Challenge!

quiz

Worksheet

•

6th - 8th Grade

Light and Sound Waves

101 questions

Light and Sound Waves

quiz

Worksheet

•

6th - 8th Grade

Classification Review

104 questions

Classification Review

quiz

Worksheet

•

6th - 8th Grade

Earth/Space Science CFE Review 2022 Part 2

100 questions

Earth/Space Science CFE Review 2022 Part 2

quiz

Worksheet

•

7th - 8th Grade

Science Final Exam Review

100 questions

Science Final Exam Review

quiz

Worksheet

•

8th Grade

Q3 Test Review 21-22

100 questions

Q3 Test Review 21-22

quiz

Worksheet

•

8th Grade

NGSS Prep Review

100 questions

NGSS Prep Review

quiz

Worksheet

•

6th - 8th Grade

8th Science STAAR Review

100 questions

8th Science STAAR Review

quiz

Worksheet

•

8th Grade