WorksheetsScience Practices
Total questions: 15
Worksheet time: 9mins
What do you call the variable you change or manipulate in an experiment?
The dependent variable
The independent variable
The controlled variable
The scientific variable
A good controlled experiment has:
One experimental group and control
One experimental group and more than one control
Multiple experimental groups and no control
Multiple experimental groups and one control
How should you manipulate the sample size and number of trials in order to reduce error in an experiment?
Have a large sample size and one trial
Have a large sample size and multiple trials
Have a small sample size and one trial
Have a small sample size and multiple trials
A good experimental method is:
Written in a step-by-step fashion
Lists all the materials you need for an experiment
States the specific measurements and observations you need to make in an experiment
All of the above
Identify the types of relationships in the three graphs.
Direct, indirect, constant
Indirect, direct, constant
Constant, direct, indirect
Constant, indirect, direct
What is a bias?
A judgment based on facts
A judgment based on opinion
A scientific observation of a natural process that occurs on Earth
A non-scientific prediction about something in the natural world
Which form of communication would be best to provide a "snapshot" or summary of your findings in an experiment?
A report
A presentation
A poster
A poem
What should you NOT do when communicating or arguing scientific ideas?
Back up your ideas with reliable pieces of evidence
Credit others' ideas by citing where you obtained those ideas
Consider and discuss alternative viewpoints and provide evidence that refutes them
Use feeling and emotion to make a case for your argument
How is a control important to a controlled experiment?
It represents the most "normal" conditions
It will lead to a correct answer because it is controlled
It will allow a scientist to make sure the experiment does what they want it to do
None of the above
Which is a way you can reduce error in an experiment?
Use a small sample size and one trial
Change all of the variables
Follow the experimental method meticulously
If you do not have the correct lab equipment, just make do with what you have
Why is it important to recognize bias in an investigation?
It does not matter if there is bias in an investigation
It is okay to have a bias as long as the scientist knows about it
Recognizing bias in an experiment just wastes time, the results will not be affected
Bias can lead to dishonest scientific ideas
A scientist performs an experiment to determine the effects of exercise on heart rate. He uses two students in his experiment. He measures the heart rate of each student before exercising. Both students run one mile. The boy finished 2 minutes faster than the girl. The girl says she has a cold and had trouble running. The scientist measures the heart rate of the other student after exercising. She analyzes the data.
What is an error made during this experiment?
The scientist only uses two students
The scientist had a control group
The scientist runs multiple trials
The scientist measure several variables
A student writes a report on why he feels we shouldn't use genetic engineering to create seedless fruits. He explains how genetic engineering is used to make seedless fruits using the information he read about in his textbook. He discusses the dangers of eating genetically engineered food using information he read about in a magazine. He calls people who eat genetically engineered food "stupid" because they don't understand the danger of eating seedless fruits.
What is a bias the student has about genetically engineered food?
The student does not have a bias
The student prefers seedless grapes over seedless watermelons
The student thinks you should eat more seedless fruits
The student thinks that people who eat seedless fruits are stupid
Which is an example of a quantitative observation?
The frog is green, red, and orange
The frog has sticky feet
The frog lives in the rainforest
The frog is 65 mm in length
Which is a qualitative observation?
The frog is 3 inches in length
The frog is green, red, blue, yellow, and orange
The frog reaches maturity in 21 days
The frog is 5 ounces
