Show:
Variables
The Scientific Method
Measurement
Scientific Theory
Graphs
100
A variable that is unchanged throughout an experiment is called this.
What is a control variable?
100
The variable that is manipulated by the experimenter is called this.
What is the independent variable?
100
A person who is 1.82 meters tall is this many centimeters tall.
1.82 meters x 100 centimeters/1 meter = 182 centimeters
100
A scientific theory is an attempt to describe this.
What is a natural law?
100
This variable is found on the x-axis.
What is the independent variable?
200
Bonita set up an experiment to test the effect of salt water on the germination of plant seeds. She used 4 different concentrations of salt water to water seeds in different plant pots, along with one plant pot she watered with plain water, and counted how many seeds sprouted in each pot. This is the independent variable.
What is salt concentration?
200
The purpose of an experiment is to do this.
What is test the hypothesis and collect data?
200
6 kilometers is this many millimeters.
6 kilometers x 1,000,000 millimeters/1 kilometer = 6, 000, 000 millimeters
200
Once a scientific theory has been accepted, it continues to be tested against this.
What is new evidence?
200
This variable is found on the y-axis.
What is the dependent variable?
300
Bonita set up an experiment to test the effect of salt water on the germination of plant seeds. She used 4 different concentrations of salt water to water seeds in different plant pots, along with one plant pot she watered with plain water, and counted how many seeds sprouted in each pot. This is the dependent variable.
What is number of seeds sprouted?
300
A good hypothesis can be this.
What is tested?
300
Arrange these lengths from shortest to longest. 7 cm, 62 mm, 0.06 km, 12 m
62 mm, 7 cm, 12 m, 0.06km
7 cm x 1 m/100 cm = 0.07 m
62 mm x 1 m/1000mm = 0.062 m
0.06 km x 1 m /0.001 km = 60 m
300
Scientific evidence must be these two things.
What are objective and repeatable?
300
Kosta decides to cook some pasta noodles. He notices that the directions say to add salt to the water before bringing the water to a boil. The next day, Kosta asks his science teacher, Ms. Jackson, a question: "How does adding salt affect the boiling temperature of water?" Of course, Ms. Jackson asks Kosta to plan and conduct an experiment to find the answer. This specific variable would be graphed on the x-axis.
What is amount of salt?
400
Bonita set up an experiment to test the effect of salt water on the germination of plant seeds. She used 4 different concentrations of salt water to water seeds in different plant pots, along with one plant pot she watered with plain water, and counted how many seeds sprouted in each pot. This is one control variable.
What is number of seeds, type of pot, amount of water, amount of sunlight....?
400
A hypothesis can be good without being correct because...
What is it still gives you valuable information and it can help you modify your experiment?
400
Convert the following quantity of time to seconds. 3:07:18
3 hours x 60 minutes/1 hour x 60 seconds/1 minute = 10,800 seconds
7 minutes x 60 seconds/minute = 420 seconds
10,800 seconds + 420 seconds + 18 seconds = 11,238 seconds
400
Rules that explain how all things in the universe behave.
What are natural laws?
400
Kosta decides to cook some pasta noodles. He notices that the directions say to add salt to the water before bringing the water to a boil. The next day, Kosta asks his science teacher, Ms. Jackson, a question: "How does adding salt affect the boiling temperature of water?" Of course, Ms. Jackson asks Kosta to plan and conduct an experiment to find the answer. This specific variable would be graphed on the y-axis.
What is temperature?
500
Think about the relationship between the amount of gas you have in your car and how far you can travel. Name the dependent variable, the independent variable, and the relationship you would expect to see between the two variables.
What is
IV=amount of gas
DV=distance traveled
and direct relationship (as one increases, the other increases)?
500
These are the five steps in the scientific method.
What are
1) Ask question
2) Collect data/research
3) State a hypothesis
4) Test the hypothesis with an experiment and collect data
5) Draw conclusions based upon the experiment?
500
it is important to include units whenever you describe measurements because...
What is
to be understood
measurements are comparisons and you can’t tell what is being compared or what is meant without them
to be precise
500
A scientific theory is an attempt to describe a natural law. These are the three tests required for a scientific theory to be accepted as an explanation for a natural law.
What are
it must have significant evidence supporting it
there must be no evidence that proves it false
it must be unique?
500
Kosta decides to cook some pasta noodles. He notices that the directions say to add salt to the water before bringing the water to a boil. The next day, Kosta asks his science teacher, Ms. Jackson, a question: "How does adding salt affect the boiling temperature of water?" Of course, Ms. Jackson asks Kosta to plan and conduct an experiment to find the answer. You should see THIS type of relationship between amount of salt and temperature.
What is a direct relationship?