Science Project Night. Carson Elementary. Start with a testable question

Transcription

1

2 Science Project Night Carson Elementary Start with a testable question???????

3 Testable Questions Testable Questions have: a responding variable a manipulated variable

4 Variables Manipulated Variable The single condition that will be changed in an experiment

5 Variables Responding Variable The condition that will be measured in an experiment

6 Variables Controlled Variables The conditions that are kept the same (unchanged) in an experiment

7 Testable Question Does changing the height of the ramp affect the speed of the car going down the ramp?

8 Testable Question #1 Manipulated Variable Does changing the height of the ramp affect the speed of the car going down the ramp? Responding Variable

9 Testable Question #1 Controlled Variables: * Same car * Same ramp surface * Surface the car roll onto * etc

10 Testable Question Does changing the amount of light affect the growth rate of plants?

11 Testable Question #2 Manipulated Variable Does changing the amount of light affect the growth rate of plants? Responding Variable

12 Testable Question #2 Controlled Variables: * Same type / size of plant * Same wattage of bulb * Same amount of water * Same soil * Same environmental conditions * etc

13 Testable Question Does the temperature of water affect the time it takes a sugar cube to dissolve? Hot Cold

14 Testable Question #3 Manipulated Variable Does the temperature of water affect the time it takes a sugar cube to dissolve? Responding Variable

15 Testable Question #3 Controlled Variables: * Same size of container * Same amount of water * Same amount of sugar * Same dissolving method used * etc

16 Testable or Not Testable? Testable Questions need 2 parts 1. A manipulated variable 2. A responding variable

17 Testable or Not Testable? Is this a testable question? How does a paper airplane fly? No, because there is not a manipulated variable and a responding variable in the question.

18 Make the Question Testable To change the question so it is testable: First list some variables that you could manipulate that are involved with flight of a paper airplane wing shape body shape type of paper used

19 Make the Question Testable Second, decide what you are going to measure (responding variable). For example: Distance the plane will fly Length of time the plane stays in the air

20 Make the Question Testable Now, select one manipulated variable and one responding variable. Put them together to create the testable question. For example:

21 Make the Question Testable Does changing the shape of the wing affect the distance the paper airplane will fly? Does changing the shape of the body affect the length of time the paper airplane will stay in the air?

22 Testable Question Formats Here are some possible sentence starters to create a testable question. Does changing manipulated affect? responding variable variable How does changing manipulated affect responding? variable variable If I change manipulated will it affect responding? variable variable

23 What if it Isn t Testable? Question: Will a rocket go higher? Think about variables that could be manipulated (changed) Examples: shape of the nosecone shape of the nozzle shape of the fins

24 What if it Isn t Testable? Question: Will a rocket go higher? What would be measured? (Can it be measured?) Example: Height the rocket flies

25 What if it Isn t Testable? Question: Will a rocket go higher? Changing our non-testable question to a testable question: Manipulated Variable Does changing the shape of the fins affect the height a rocket will fly? Responding Variable

26 What if it Isn t Testable? Question: Will hairspray move a potato? What variable could be manipulated? (What could be changed?) What would be measured? (Can it be measured?)

27 What if it Isn t Testable? Question: Will hairspray move a potato? What variable could be manipulated? (What could be changed?) Examples: size of potato brand of hairspray size of hairspray container

28 What if it Isn t Testable? Question: Will hairspray move a potato? What would be measured? (Can it be measured?) Example: Distance the potato moves

29 What if it Isn t Testable? Question: Why is the sky blue? What variable could be manipulated? (What could be changed?) What would be measured? (Can it be measured?)

30

31 1. Does changing the kind of surface affect how far my ball will roll? Testable 2. Does the size of wheels affect how far my toy car moves? Testable Is It Testable?

32 3. Does laundry detergent make dirty white clothes clean? Not testable 4. How does the thickness of insulation affect the temperature in a dog s house? Testable Is It Testable?

33 Is It Testable? 5. Do batteries make flashlights light up? Not testable 6. Will the mass of a spaceship affect how fast it falls? Testable

34 Good luck with your science fair projects. I look forward to seeing you at the District Science Fair April