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Worksheets7th Grade Science Review
Total questions: 76
Worksheet time: 1hrs 6mins
Name
Class
Date
2.
The way energy is passed from one organism to another
a)
food chain
b)
energy
c)
extinct
d)
habitat
2.
The way energy is passed from one organism to another
a)
food chain
b)
energy
c)
extinct
d)
habitat
3.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
4.
What four things do every organism need for survival?
a)
food, water, dirt, and a hat
b)
protection, water, food, and air
c)
air, sun, dirt, and water
d)
light, electricity, and worms
5.
Examples of a producer
a)
frog
b)
algae
c)
worm
d)
mouse
7.
Example of a consumer
a)
worm
b)
bacteria
c)
mushroom
d)
hawk
7.
Example of a consumer
a)
worm
b)
bacteria
c)
mushroom
d)
hawk
9.
A tree is a ....
a)
composer
b)
decomposer
c)
producer
9.
A tree is a ....
a)
composer
b)
decomposer
c)
producer
10.
Humans are considered...
a)
consumers
b)
decomposers
c)
producers
11.
Worms are considered...
a)
producer
b)
consumer
c)
decomposer
12.
Grass is considered a ...
a)
consumer
b)
producer
c)
decomposer
13.
What is a producer?
a)
an organism that gets energy from eating other organisms
b)
an organisms that uses sunlight to make its own food
c)
an organism that gets energy from eating dead organisms, non-living material or waste
d)
an organism that uses chemical energy to make its own food
14.
What is a herbivore?
a)
an animal that gets energy from eating other animals
b)
an organism that gets energy from eating only plants
c)
an animal that gets energy by eating both plants and other animals
d)
an animal that eats only herbs
15.
An organism that gets energy from eating other organisms is a ______________
a)
producer
b)
consumer
c)
decomposer
d)
prey
17.
A connection of food chains with many food energy paths in an ecosystem is a ____________
a)
ecosystem
b)
food web
c)
environment
d)
population
17.
A connection of food chains with many food energy paths in an ecosystem is a ____________
a)
ecosystem
b)
food web
c)
environment
d)
population
18.
An animal that is hunted and eaten for food is a
a)
predator
b)
prey
c)
population
19.
What is a carnivore?
a)
an animal that gets energy by eating other animals
b)
An animal that gets energy by eating only plants
c)
an animal that gets energy by eating both plants and animals
d)
an animal that makes its own energy through photosynthesis
20.
An animal that gets energy from eating both plants and animals is a
a)
herbivore
b)
carnivore
c)
omnivore
d)
autotroph
21.
Which of the following is NOT a consumer
a)
grass
b)
dog
c)
shark
d)
fish
22.
Where do all life forms get their energy?
a)
Earth's Core
b)
Water
c)
Plants
d)
The Sun
23.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms.
d)
They represent how water is transferred within a habitat.
24.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
25.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
26.
If a frog is the prey, what could be the predator?
a)
Grass
b)
Insect
c)
Snake
d)
Snail
28.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
28.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
29.
What's the role of consumers in a food chain?
a)
Use sunlight to make food
b)
Eat other species and keep them from overpopulating
c)
Break down dead stuff
d)
Add nutrients to the soil
30.
Organic compounds are always based on what element?
a)
hydrogen
b)
water
c)
carbon
d)
arsenic
31.
A pure substance that cannot be broken down into simpler substances.
a)
element
b)
compound
c)
molecule
d)
carbon dioxide
32.
Is this an example of an organic or inorganic compound?
a)
Organic
b)
Inorganic
33.
Water is what type of compound?
a)
organic
b)
inorganic
c)
toxic
34.
Is this an example of an organic or inorganic compound?
a)
Organic
b)
Inorganic
36.
2 or more elements chemically bonded is a
a)
compound
b)
element
c)
atom
36.
2 or more elements chemically bonded is a
a)
compound
b)
element
c)
atom
37.
BaMgC
a)
Element
b)
Compound
38.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
39.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
40.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
42.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
42.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
43.
A change in the size, shape, or state of matter.
a)
chemical change
b)
physical change
c)
chemical reaction
d)
electron change
44.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
sour milk
45.
Kim puts an ice cube in a beaker and it melts. This is a good example of:
a)
a physical change.
b)
a chemical change.
c)
an experiment.
d)
an analysis.
46.
Adding baking soda and vinegar together and it fizzes and creates carbon dioxide.
a)
Chemical
b)
Physical
47.
What is an example of a Chemical change?
a)
Ripped paper
b)
boiled egg
c)
cracked egg
d)
sugar in water
48.
what is the definition of chemical change?
a)
any change that results in the formation of new chemical substances.
b)
changing clothes
c)
matter cannot be created or destroyed, only change form
d)
changes affecting the form of a chemical substance, but not its chemical composition.
49.
what is the definition of physical change?
a)
any change that results in the formation of new chemical substances.
b)
rusting
c)
changes affecting the form of a chemical substance, but not its chemical composition.
d)
any property that is measurable, whose value describes a state of a physical system
50.
One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?
a)
evaporation; chemical change
b)
condensation; physical change
c)
evaporation; physical change
d)
condensation; chemical change
51.
Boiling is a chemical change
a)
true
b)
false
52.
Which of the following is a physical characteristic of a metal?
a)
texture
b)
malleable
c)
brittle
d)
semi-conductor
53.
Which of the following is a physical characteristic of a nonmetal?
a)
texture
b)
malleable
c)
brittle
d)
semi-conductor
54.
Which of the following is a physical characteristic of a metalloid?
a)
texture
b)
malleable
c)
brittle
d)
semi-conductor
55.
A student is examining the physical properties of a sample. The sample is malleable, but does not conduct electricity nor have luster. This sample would be a...
a)
metal
b)
nonmetal
c)
metalloid
56.
If the surface of an object reflects light it has
a)
luster
b)
malleability
c)
ductility
d)
dull
57.
If a student observes a silvery solid that is malleable, good conductor, and ductile it is a...
a)
nonmetal
b)
metal
c)
metalloid
58.
What does brittle mean?
a)
Breaks into pieces
b)
can be hammered into thin sheets
c)
No shine
d)
reflects light shiny
59.
How would this element be classified?
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Metamorphic
60.
Energy due to motion is ____________ energy.
a)
Potential
b)
Energy
c)
Kinetic
d)
Friction
61.
The faster an object moves, the ________ kinetic energy it has.
a)
more
b)
less
c)
none of the above
d)
all of the above
62.
__________ is stored energy.
a)
Potential
b)
Kinetic
c)
None of the above
d)
All of the above
63.
Gravitational potential energy depends on the ________ and ________ of the object.
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction
64.
which point has the most potential energy
a)
G
b)
f
c)
b
d)
a
66.
Which 2 letters have the most kinetic energy
a)
W & Y
b)
X & Z
66.
Which 2 letters have the most kinetic energy
a)
W & Y
b)
X & Z
67.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
68.
Energy can be _____________ or changed from one type to another.
a)
destroyed
b)
transferred
c)
created
d)
ignored
69.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
70.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
71.
Which is the best example that something has kinetic energy?
a)
a. a car parked on a steep hill
b)
b. a tennis ball rolling across the court
c)
c. a picture hanging on the wall
d)
d. a piece of coal before it's burned
72.
Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?
a)
Chemical to light
b)
Electrical to chemical
c)
Electrical to light
d)
Chemical to electrical
73.
Which of the following shows an energy transformation from chemical energy to electrical to light energy?
a)
A bolt of lightning lights the night sky.
b)
A candle glows brightly in the dark.
c)
A fire in a fireplace lights up a room.
d)
A battery causes a flashlight to shine.
74.
People get energy from the food that they eat and transform that energy as they move. Which energy transformations occur as a student rapidly rubs the palms of his hands together?
a)
mechanical to thermal to electrical
b)
chemical to mechanical to thermal
c)
mechanical to chemical to sound
d)
chemical to sound to electrical
75.
A television works by transforming electrical energy into what other kinds of energy?
a)
Light, thermal, and sound
b)
Thermal, chemical, and solar
c)
Sound, mechanical, and electrical
d)
Light, chemical, and mechanical
76.
Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?
a)
chemical to mechanical to electrical to radiant
b)
radiant to electrical to sound
c)
chemical to radiant to mechanical to electrical
d)
electric to radiant to chemical
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