WorksheetsNOS review
Total questions: 40
Worksheet time: 31mins
What is an experiment?
an experimental subject that is purposefully not tested
the variable that responds to the manipulated variable
knowledge acquired by observation or experimentation
a method of testing a hypothesis using controlled conditions and clearly defined variables
What is the difference between experiments and investigations?
An experiment has variables
An investigation use hypotheses
Both answer scientific questions
None of these
What is an outcome variable?
an experimental subject that is purposefully not tested
the variable that responds to the test variable
knowledge acquired by observation or experimentation
a method of testing a hypothesis using controlled conditions and clearly defined variables
Which of the following describes a model?
the variable that is manipulated to test a hypothesis
a theory that is proven with evidence, and widely accepted as true
something used to represent, explain or illustrate a concept or an object
none of these
What is a test variable?
the variable that is manipulated to test a hypothesis
a theory that is proven with evidence, and widely accepted as true
the variable that responds to the manipulated variable
the variable that stays the same
What is a constant variable?
Responds to the independent variable
Directly tested (and changed) by the scientist
Intentionally kept the same by the scientist
Intentionally omitted by the scientist
Performance (grades) on a unit test can be dependent upon the amount of preparation (studying) done before it. If this is a testable hypothesis, what is the outcome (dependent) variable?
Preparation (studying)
Performance (grades)
Chicken Pot Pie
when you explain or interpret the things you observe, you are ___________.
making a hypothesis
inferring
developing a theory
declaring a law
factor that may change in response to the test variable
scientific inquiry
independent variable
outcome variable
hypothesis
an experiment in which only one variable is manipulated at a time
controlled experiment
data
dependent variable
scientific inquiry
A prediction about a problem that can be tested is a(n) ____.
control
independent variable
dependent variable
hypothesis
Science is unique from other ways of knowing and thinking because it is based on
empirical data
Feelings
Election voting
superstitions
True or False: Scientists can make different inferences based on having different life experiences.
True
False
Why do scientists run multiple trials?
To ensure accuracy in their findings
To help them make a good guess about their work
To prevent other scientists from replicating their work
If they run enough trials, they will get the results they were hoping for.
When we gather information about the world using our senses, we are making a(n)
guess
opinion
inference
observation
The girl has hurt her knee
There are three young girls with party hats on
Which of these describes a natural phenomenon or relationship that always occurs under specific conditions
theory
law
Which of these can be represented mathematically and provide no explanation why a phenomenon occurs?
theory
law
Scientists create both scientific theories and scientific laws as they make observations and conduct experiments about the natural world. Which of the following statements most accurately compares the difference between scientific theories and scientific laws
science laws are based on evidence while science theories are not
science theories involve only biology, while laws involve all types of science
science theories involve mathematical equations, while science laws are based on observations
science theories are ideas that explain natural events, while science laws predict what will happen in a natural event.
A scientific theory can become a law if it has enough evidence to support it.
True
False
A scientist does an investigation that has already been done before. He does not change anything about it. He follows the procedures exactly like the scientist before him.
This is repetition.
This is replication.
A 6th Grade science student does three trials to see which car will go faster.
This is repetition.
This is replication.
What is the OUTCOME variable in this experimental question?
"Does eating breakfast improve test scores?"
eating breakfast or not
the grade you got on the test
what time you get up in the morning
how tasty the breakfast is
You are testing how the amount you water a plant affects its growth. What would be the TEST VARIABLE in this experiment?
They type of pot you put the plants in.
The amount you water each plant.
The amount of sunlight the plants get.
The amount the plant grows.
A scientist is testing which flavor of ice cream melts the fastest. What would his controlled variables be? (choose ALL that apply)
The flavor of ice cream
the kind of cone the ice creams are in
the place in the room where the ice cream is
the size of the scoop
the time it takes to melt
How many independent (test) variables should be changed in an experiment?
1
2
as many as you want
0
These are the variables that should stay the same. They do not get any changes in order to make for a fair test.
Dependent Variables
Controlled variables
Independent Variables
Mr. Pransky wants to see how different surfaces affect how high a tennis ball can bounce. What is the test variable?
the different surfaces
using the same ball
how high they bounce
Steve wanted to see if different types of fertilizer influence sunflower growth. What is the control group?
type of fertilizer
sunflower grown without fertilizer
The "normal", "natural" or whatever is NOT receiving the tested variable
Independent Variable
Control Group
What is the group in an experiment that receives treatment with the test variable?
control group
experimental group
Which of the following is an example of a hypothesis?
How many hours of sleep does a person need to do well on a test?
The experiment requires at least 30 participants.
If you get at least six hours of sleep, then you will do better on tests.
The results show that the person who gets 8 hours of sleep does best on the test.
Which of the following could be answered with a systematic observation rather than an experiment?
How does temperature affect honey production in bees?
How tall can grass grow in 26 days?
How does sunlight impact photosynthesis?
Does eating breakfast impact student test scores?
Which of the following is an example of a scientific LAW?
All organisms are made up of one or more cells that are the basic unit of structure and function.
The earth is made up of several large tectonic plates that move due to magma convection
In a chemical or physical change, mass is neither created nor destroyed. The mass before will equal the mass after.
All matter is made up of tiny, indivisible particles called atoms.
