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Science Review

Total questions: 55

Worksheet time: 37mins

Name
Class
Date
1.
What is a community of living and nonliving things that interact?
a)
Ecosystem
b)
Biotic
c)
Abiotic
d)
Community
2.
The living and once living things in an ecosystem.
a)
Biotic
b)
Abiotic
c)
Species
d)
Producers
3.
Which item is a mixture?
a)
air
b)
diamond
c)
gold
d)
water
4.
A Popsicle is left on the counter in a warm room. What state change occurs?
a)
freezing
b)
melting
c)
sublimination
d)
liquid
5.
What state change is this an example of?
a)
evaporation
b)
condensation
c)
sublimination
d)
melting
6.
What does every food chain begin with?
a)
sun
b)
producer
c)
consumer
d)
decomposer
7.
What does a decomposer do for an ecosystem?
a)
gives energy to producers
b)
makes food for consumers
c)
returns nutrients back to the soil
d)
uses energy from the sun
8.
If all of the mice died in an ecosystem from a disease, what would happen to the population of owls?
a)
increase
b)
decrease
c)
stay the same
d)
become extinct
9.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
10.
A connection of food chains with many food energy paths in an ecosystem is a ____________
a)
ecosystem
b)
food web
c)
environment
d)
population
11.
Something that takes up space and has mass.
a)
volume
b)
matter
c)
mass
d)
density
12.
What is the function of the heart?
a)
Protects organs and produces red blood cells.
b)
Generates heat.
c)
Breaks down food into nutrients.
d)
A pump that moves the blood. 
13.
What is the function of the digestive system?
a)
to break down and absorb nutrients
b)
to support and protect our bodies
c)
to produce vitamin D
d)
to help us move
14.
What are personal characteristics called that have been passed on to offspring from parents, such as dimples or eye color?
a)
recessive traits
b)
genetics
c)
inherited traits
d)
gene
15.
When a piece of wood burns, it combines with oxygen in the air. The gas carbon dioxide forms. What does the formation of the gas show? 
a)
that a chemical change has taken place
b)
that a physical change has taken place
c)
that a physical change has been reversed
d)
that a chemical change has been reversed 
16.
Which of these controls what enters and exits a cell? 
a)
cell wall
b)
nucleus
c)
cytoplasm 
d)
cell membrane
17.
Which part of a plant cell changes energy from the sun into food? 
a)
chloroplast
b)
cytoplasm
c)
nucleus
d)
cell membrane
18.
Joe's spoon sat outside all week. Now it is rusty. What type of change is this? 
a)
Chemical Change
b)
Physical Change
19.

What is the basic unit of structure and function of all living things?

a)

classification

b)

microorganism

c)

heredity

d)

cell

20.

What is the passing on of traits and physical features from parents to their offspring?

a)

genes

b)

chromosomes

c)

heredity

d)

DNA

21.

Which one of these behaviors is an instinct?

a)

A cat licking its fur to keep it clean

b)

A seal clapping its flippers together for a treat

c)

A pod of orcas working together to hunt fish

d)

A dog running to the door when it sees its owner grab a leash

22.

Which organelle is not in an animal cell?

a)

chloroplast

b)

cell membrane

c)

nucleus

d)

cytoplasm

23.

Which body system sends electrical signals to all other body systems?

a)

circulatory system

b)

digestive system

c)

muscular system

d)

nervous system

24.

Which system of the human body provides protection to most of the major organs?

a)

skeletal system

b)

circulatory system

c)

respiratory system

d)

muscular system

25.

Which example best shows structures that make up the digestive system in the human body?

a)

heart, blood, vessels

b)

nose, trachea, lungs

c)

brain, spinal cord, nerves

d)

esophagus, stomach, intestines

26.
A collection of the same kinds of cells working together to do the same job.
a)
cells
b)
tissues
c)
organs
d)
system
27.
Your body systems work separately and do not effect each other.
a)
true
b)
false
28.
What is mass?
a)
The amount of matter in an object. 
b)
The amount of volume in an object
c)
The amount of space an object takes up
d)
The temperature of an object
29.
Mass is measured in:
a)
grams
b)
pounds
c)
inches
d)
centimeters
30.
Billy melted 20 grams of ice.  If all of the ice changed to water, what would the mass of the water be?
a)
15 grams
b)
40 grams
c)
10 grams
d)
20 grams
31.
What is volume?
a)
The amount of matter in an object
b)
The amount of space an object takes up 
c)
The measure of the temperature of an object
d)
The height and width of an object
32.
If an object sinks to the bottom of a liquid then:
a)
the object is less dense than the liquid
b)
the object is not dense at all
c)
the object is more dense than the liquid
d)
the liquid is water.
33.
Is "mold growing on cheese" a chemical or physical change?
a)
Chemical change
b)
Physical change
34.
Is "sugar dissolves in water" a chemical or physical change?
a)
Chemical change
b)
Physical change
35.
A pencil is sharpened.  Physical or chemical change?
a)
Physical change
b)
Chemical change
36.
A brass door knob tarnishes.  Physical or chemical change?
a)
Chemical change
b)
Physical change
37.

Animal cells can be distinguished from plant cells easily because of which of the following?

a)

Animal cells have mitochondria and plant cells do not.

b)

Plant cells have lysosomes and animal cells do not.

c)

Only plant cells have centrioles around their nucleus.

d)

Only plant cells have large central vacuoles and cell walls.

38.

Jared observes a cell in biology lab with the light microscope. The cell has the following structures: nucleus, cell wall, and chloroplast. Identify the type of cell that Jared is observing.

a)

animal

b)

plant

c)

fungus

d)

bacteria

39.

Which structure within the cell plays an important role in energy production for the cell?

a)

ribosome

b)

endoplasmic reticulum

c)

mitochondria

d)

Golgi apparatus

40.

What is the large sac that holds food, water, and waste?

a)

Cytoplasm

b)

Vacuole

c)

Nucleus

d)

Mitochondria

41.
What is the producer's role in a food chain?
a)
To make their own food using the sun's energy.
b)
To hunt other animals for food.
c)
To break down waste and dead plants.
d)
To eat both plants and animals. 
42.
A deer eats grass and leaves from bushes and trees.  What kind of consumer is a deer?
a)
herbivore
b)
omnivore
c)
carnivore
43.
A hawk flies low over the grassland, hunting for a prairie dog.  Which organism is the predator?
a)
The hawk
b)
The prairie dog
c)
Neither are predators.
44.
Which is an example of a food chain?
a)
grass, rabbit, snake, owl
b)
rabbit, grass, snake, owl
c)
grass, fox, mouse, owl
45.
Living things that get energy by eating
a)
producer
b)
consumers
c)
decomposer
46.

A simple food chain includes hawks, lizards, and insects. Which will most likely happen to the lizard and hawk populations if a pesticide is sprayed to kill the insects, and the lizard and hawk populations cannot find other food in this ecosystem?

a)

Both the lizard population and the hawk population will increase.

b)

Both the lizard population and the hawk population will decrease.

c)

The lizard population will increase, but the hawk population will decrease.

d)

The lizard population will decrease, but the hawk population will increase.

47.

Which will most likely cause a decrease in predator populations?

a)

an increase in prey populations

b)

a decrease in prey populations

c)

a decrease in decomposers

d)

an increase in producers

48.
Someone who wants to know how and why things work.  They also design and build things.
a)
scientist
b)
ME!
c)
Engineer
49.
A simple machine that allows you to test your design.
a)
solution
b)
design
c)
prototype
d)
iterative process
50.
What is the main goal of the design process?
a)
To write reports
b)
To make things
c)
To make charts and graphs
d)
To find solutions to problems
51.
Anthony makes a paper bridge between two stacks of books. It collapses when he pushes a toy car across it. Which material would NOT help him improve the bridge?
a)
Markers
b)
Paper
c)
Straws
d)
Tape
52.
What order do the steps of the Design Process go in?
a)
Ask, Imagine, Plan, Create, Improve, Communicate
b)
Imagine, Ask, Plan, Improve, Create, Communicate
c)
Ask, Plan, Create, Imagine, Improve, Communicate
d)
Ask, Improve, Communicate, Brainstorm, Create, Plan
53.
This diagram is an example of what step in the engineering design process? 
a)
Create
b)
Imagine
c)
Plan 
d)
Improve 
54.
When finding the solution to an engineering problem, there is/are usually... 
a)
Only one possible correct solution
b)
A very limited number of possible correct solutions
c)
Many possible correct solutions
d)
No possible correct solutions
55.
In order to develop ideas for a basketball shoe, a design team visits three different shoe stores. What part of the design process is this?
a)
create a model
b)
research and generate ideas
c)
select an approach

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