WorksheetsEnv. Systems CA1 Fall 2020 Review
Total questions: 16
Worksheet time: 8mins
What is the purpose of having a control in an experiment?
To add one more variable to examine
It allows experimenter to see if the experiment actually works.
To allow more time in the experiment.
All of the above
How many variables can you change during an experiment at a time?
1
2
3
4
Why are correlations important in Science?
It allows experimenter to predict what will happen based on other known facts.
It allows experimenter to add another variable to the experiment.
It allows experimenter to come to a definite conclusion.
None of the above
What is the name of the biggest carbon reservoir on Earth?
Gneiss
Shale
Granite
Limestone
Which of the following is NOT part of the nitrogen cycle?
Nitrogen fixing bacteria
Nitrates
Ammonia
Nitrogen trapped inside rocks
How much nitrogen is found in the atmosphere on Earth?
18 percent
21 percent
50 percent
78 percent
True or False: Consumers get their energy directly from the sun.
True
False
Which of the following organisms are responsible for converting nitrogen gas into other usable organic compounds?
Fungi
Plants
Nitrogen-fixing bacteria
Animals
Where do producers get their carbon from?
Soil
Water
Air
Animals
Where are fossil fuels located?
On Earth's surface
Trapped beneath Earth's surface
Under the Ocean floors
All of the above
Where would you find nitrogen fixing bacteria inside a plant?
Leaves
Stems
Flowers
Roots
How is energy stored in living organisms?
proteins and DNA
DNA and RNA
Carbohydrates and proteins
Lipids (fats) and carbohydrates
What is a hypothesis?
A conclusion to the experiment.
A testable statement.
A set of instructions for your experiment.
None of the above
What is a prediction
A testable statement.
A logical explanation as to what is going to happen
The procedure of an experiment.
All of the above
Organisms that are able to break down organic material are known as--
Animals
Plants
Decomposers
Humans
The evidence of excessive use of fertilizer can be seeing when --
There is a delicate balance in algae growth.
There is no algae growing in an ecosystem.
There is an overgrowth of algae known as algal bloom.
None of the above
