Variables
A teacher wants to see if extra practice problems help students improve in math. One group gets extra problems, while the other only does the regular assignment. After a week, she gives a test to both groups.
Which group is the control group?
Students doing regular assignment only
A series of steps used by scientists to solve a problem or answer a question.
Scientific Method
A way of learning about the natural world
Science
Billy was trying to conduct an experiment on how soil affects plant growth. How many independent variables should he include?
One.
Science is the best subject ever is an example of a ________?
A. Observation
B. Inference
C. Opinion
C. Opinion
In the scenario, “Does the temperature of a classroom affect students’ test scores?”, which of the following is the independent variable?
Temperature in the classroom
This is your "best guess" prediction or statement that can be tested and will explain what can happen in an investigation.
Hypothesis
A statement of what is thought to be true. It is formed after a hypothesis has been tested many times and is supported by much evidence.
Theory
Which of the following sentences describes what scientists do?
A) Scientists answer questions by conducting investigations
B) Scientists observe, or use their five senses to collect information
C) Scientists compare, finding ways objects and events are similar and different
D) Scientists draw conclusions from the results of their observations
E) All of the above
E. All of the Above
The plant grew 15 inches over the course of a year is an example of _________ data.
Quantitative or Qualitative
Quantitative
A teacher wants to see if using colored pens helps students memorize spelling words. One group writes words with colored pens, while the other writes in black ink. After a week, she tests both groups.
Which group is the experimental group?
Students using colored pens
What is the correct order of the scientific method?
Ask a Question→Gather Information→Form Hypothesis→Conduct Experiment→Analyze Results→Draw Conclusions/Share Results
Using your five senses to gather information
Observation
Scientists communicate the results of their investigations. Why is it important for scientists to do this?
To learn from one another’s ideas so scientific knowledge grows
This type of graph would be used when comparing things between different groups.
Bar Graph
“Does the amount of water given to a plant affect the number of leaves it grows?”, which of the following is the dependent variable?
Number of leaves
What is Step 4 of the Scientific Method, where your plan a procedure and follow the steps to test your hypothesis.
Conduct an Experiment
An idea or conclusion that's based on observation
Inference
Your conclusion should always be based on........
Evidence and Observation
This type of graph is used when comparing parts of a whole.
Circle Graph
A teacher wants to test if the color of paper affects how well students remember vocabulary words. Each student studies the same list of words for the same amount of time in the same classroom, but the paper color changes.
Which of the following would NOT be a control variable?
A. Color of the paper
B. Time spent studying
C. List of vocabulary words
D. Classroom location
What is Step 6 of the Scientific Method, where you use evidence to determine if your hypothesis is supported, and communicate your results.
Draw Conclusions/ Share Results
This graph is used when showing change over time.
Line Graph
Tom just finished an experiment to observe how much a plant grew over the course of a year. Which type of graph should he use?
Line Graph (Change over time)
After conducting an experiment, the liquid changed colors from clear to green. This is an example of what kind of data?
Qualitative Data