Podcast
Questions and Answers
What axis do you find the independent variable?
What axis do you find the independent variable?
X-axis
What axis do you find the dependent variable?
What axis do you find the dependent variable?
Y-axis
What is a controlled experiment?
What is a controlled experiment?
An experiment that only tests one variable at a time while keeping others constant.
What must a hypothesis be?
What must a hypothesis be?
When does a hypothesis become a theory?
When does a hypothesis become a theory?
Define the independent/manipulated variable.
Define the independent/manipulated variable.
Define the dependent/responding variable.
Define the dependent/responding variable.
What are constants?
What are constants?
What is a control group?
What is a control group?
The eight characteristics of life include the ability to __________.
The eight characteristics of life include the ability to __________.
Which of the following is NOT one of the characteristics of life?
Which of the following is NOT one of the characteristics of life?
Define homeostasis.
Define homeostasis.
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Study Notes
Reading Graphs
- Independent variable is located on the X-axis.
- Dependent variable is found on the Y-axis.
Experimental Variables
- Independent/Manipulated Variable: The factor that is deliberately changed during an experiment.
- Dependent/Responding Variable: The factor that is measured, which may change in response to the independent variable.
- Constants: All factors in an experiment that are kept the same to ensure a fair test.
- Control Group: The standard of comparison, representing natural conditions not subjected to the experimental treatment.
Hypothesis and Theory
- A hypothesis must be testable and can evolve into a theory if it is repeatedly tested and confirmed by multiple scientists.
Characteristics of Life
- Organisms are comprised of cells.
- They have the ability to reproduce.
- Life is based on a genetic code (DNA or RNA).
- Living things grow and develop over time.
- Organisms obtain and use materials and energy to survive.
- They respond to their environment.
- Life forms maintain internal balance known as homeostasis.
- Evolution: Living organisms undergo change over generations.
Homeostasis
- Defined as the process by which organisms keep their internal environment stable despite external changes.
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