Give one example of a model we could use in science.
Answers will vary!
Is this a testable question?
"Which material is the best insulator?"
YES! It is specific and contains 1 variable and it is testable.
What is another word for a hypothesis?
guess or prediction
The leaf is 3 centimeters long.
Quantitative or Qualitative Data ?
QuaNtitative Data
Which variable describes what the scientist measures or observes?
Dependent Variable
When researching, what type of resources should we be using?
reliable, non-biased sources
"What makes something sink of float?" is a researchable question.
How can you change that to a testable quetion?
What materials sink or float in water?
What is the density of a material that floats?
What is the density of a material that sinks?
What is our scientific word we use for list of directions or steps in an experiment?
PROCEDURE
The leaf is mostly green but yellow in some small areas.
Quantitative or Qualitative Data?
QuaLitative Data
In the MythBuster episode when they tested if it was better to walk or run in the rain, what was the independent variable?
the persons speed (walking vs running)
Write the CLAIM that goes with this evidence:
"I claim this because when I dropped an apple from the first floor window, it only slightly cracked. When I dropped it from the second floor window, it split into 3 pieces. When I dropped it from the third floor window, it completely smashed into over a dozen small pieces."
I claim that the higher we drop an apple from the more it will break apart.
Find the average of this data:
10, 5, 6
7
What is DATA?
A collection of facts.
(can be quantitative or qualitative)
Find a pattern in the data table below:
Independent Variable: Using regular soil vs soil with fertilizer in it
Dependent Variable: Height of the Sunflower in cm
List at least 3 control variables.
amount of sunlight, temperature, amount of water, size of pot, same seed, same depth buried in soil
What would the procedure need to include for an investigation to test this question:
Does the type of shoe worn during a 20 yard dash affect the speed in which you can run?
- get different types of shoes and a timer
- measure 20 yards and create a start & finish line
- have the same runner run the distance with different shoes (allow runner to rest in between trials)
- time how long it takes the runner each trial
- compare your final data
Write a hypothesis for the scientific question below:
Does the amount of Mentos added affect the height of the coke/mento explosion?
I think that the more mentos we add to the coke, the higher the explosion will be because there are more mentos for the coke to react with.
Why are models useful in science?
Models represent things in a visual way to help us understand them better.
TWO PART QUESTION.
1. What type of graph is this?
2. How many people prefer Drama movies?
1. Bar Graph
2. 1 person
Why are control variables so important?
They control the other variables in the experiment so your results will more likely be because of the change in the independent variable.
Can you list 5 of the 8 practices?
In your own words describe the steps of the scientific method (what we followed for the penny lab!)
1. Starts with a scientific question
2. Write a hypothesis
3. Create & follow a procedure
4. Observe results
5. Analyze results
6. Communicate results
Explain the difference between a CLAIM and EVIDENCE and REASONING.
The claim answers a scientific question.
Evidence is data or observations that support your claim.
Reasoning is the knowledge that you have that explains why the claim is true.
What does the acronym TAIL stand for in regards to creating a graph?
Title
Axis labels
Increments
Legend
In an experiment, you are dropping a tennis ball from different heights and measuring how high they bounce.
Name ALL 3 variables.
IV: drop height
DV: bounce height
CV: same tennis ball, same way of measuring, same way of releasing ball, same surface it is bouncing on