WorksheetsUnit 4 Review
Total questions: 21
Worksheet time: 16mins
Name
Class
Date
1.
Which type of organism obtains the energy it needs by feeding on other organisms?
a)
Autotroph
b)
Heterotroph
2.
Which type of organism creates its own food?
a)
Autotrophes
b)
Heterotrophs
3.
Which type of organism breaks down dead organisms and waste, returning important nutrients to the environment?
a)
Decomposer
b)
Herbivore
c)
Omnivore
d)
Carnivore
4.
A food chain shows the transfer of ___ from one organism to another.
a)
matter
b)
consumers
c)
energy
d)
habitat
5.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
6.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
7.
In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?
a)
10%
b)
20%
c)
80%
d)
90%
8.
What is the energy conversion during photosynthesis?
a)
chemical --> chemical
b)
thermal --> electrical
c)
chemical --> electrical
d)
radiant --> chemical
9.
What do the arrows represent in this diagram?
a)
Who is being eaten
b)
The flow of energy
c)
What things change into
d)
The decomposition of organisms
10.
On average, how much energy is lost between each trophic level?
a)
0%
b)
10%
c)
90%
d)
100%
11.
If producers were taken out of this pyramid, what would happen to the ecosystem?
a)
top predators would have most energy
b)
carnivores would be the only level to survive
c)
herbivores would be the only level to survive
d)
there would be no energy for any of the levels
12.
What is the 10% rule?
a)
If you start with 3000 units of energy at the bottom you will have 30000 units at the top
b)
as you go up the pyramid 10% of the energy is left behind at each level
c)
the higher you go the more energy is present
d)
as you go from one level to the next, only 10% of the energy is transferred to the next level
13.
When there are lots of food chains combined together in a single diagram, this is called a __.
a)
food chain combination
b)
producer chain
c)
trophic web
d)
food web
14.
On a safari at night, a lion hunts and feeds on an antelope. In this relationship, the lion is the ____________________ and the antelope is the _________________.
a)
Parasite/host
b)
Predator/prey
c)
Prey/Predator
15.
The measurable factor in an experiment is known as the:
a)
Control
b)
Independent Variable
c)
Constant
d)
Dependent Variable
16.
In a controlled experiment, the variable that is changed to test the hypothesis is called the –
a)
Controlled Variable
b)
Responsive Variable
c)
Dependent Variable
d)
Independent Variable
17.
Which of these is a qualitative observation?
a)
The boy is 5 feet tall.
b)
There are six birds in the tree.
c)
The birds are tiny.
d)
There are more blue birds than black birds.
18.
The part of the experiment that remains the same for the control and experimental group.
a)
constants
b)
control
c)
independent
d)
dependent
19.
An experiment is conducted to test how different cleats change an athletes running speed. Six different types of cleats are tested and the 100m run time is recorded. What is the independent variable?
a)
The type of cleat
b)
The run time
c)
The 100 meters
d)
The athlete
20.
A variable that stays the same is called....
a)
Constant
b)
independent variable
c)
dependent variable
d)
responding variable
21.
Why do we want to test only one independent variable at a time?
a)
Because it is hard to setup a data table with more than one variable
b)
To better identify what is causing the changes
c)
It is what has always been done
d)
It's easier to perform the experiment
100 %
