LAB #5 – Simple Machines Help Us

Problem: How do simple machines help us?

Hypothesis:

Materials: various simple and compound machines

Procedure:

Results:

Name of the object					Purpose of the object		What kind of simple machine/s is it?	Draw a picture of the object
1. Plastic drink top
2. chemistry tongs
3. cooking thermometer
4. scissors (2)
5. light bulb and clamp (3)
6. plastic car (2)
7. spray bottle (2)
8. staples
9. clip on clipboard
10. flashlight
11. tape and dispenser (2)
12. rolling pin
13. nails (on wall)
14. screw (in wall)
15. stairs
16. stapler
17. triple beam balance (3)
18. crazy coaster track
19. cabinet drawer track
20. wheel on push cart
21. blinds
22. hammer (2)
23. test tube holder
24.
25.
26.
27.
28.
29.
30.

  

Analysis:

1) How do simple machines make our lives easier?

               

2) Pick three of the objects from the lab and explain how it would be like without them?  How would you accomplish the tasks they help us with without them?

3) Go to your data table and label the fulcrum for each of your levers.

                

4) Find three simple machines at home and add them to your Results.

Conclusion

What was your problem?

Restate your hypothesis.  Was it right? wrong?  why or why not?

What did you learn in this lab?

What did you like about this lab?

What were some challenges you had to deal with?

What could you do next with this problem?  What other tests could you perform?

Write down any other additional thoughts, observations, inferences, etc.

Lab #3 – Calculating Work

Work = Force x distance

Work = (Force)(Distance)

W = Fd

Problem

How can a ramp help us pull a heavy object up to a greater height?

Hypothesis

Materials

Ruler, chair, ramp (inclined plane), weights, spring scale, various metallic objects

Procedure

  

Results

Work done without ramp

Object	Force (Newtons)	Distance (cm)	Work (Joules)
50 g Weight
100 g Weight
200 g Weight
500 g Weight
Chemistry Tongs
Metal Object

 Work done with ramp

Object	Force (Newtons)	Distance (cm)	Work (Joules)
50 g Weight
100 g Weight
200 g Weight
500 g Weight
Chemistry Tongs
Metal Object

Work done with Plastic Map and ramp

Object	Force (Newtons)	Distance (cm)	Work (Joules)
50 g Weight
100 g Weight
200 g Weight
500 g Weight
Chemistry Tongs
Metal Object

Work done with Paper Towels and ramp

Object	Force (Newtons)	Distance (cm)	Work (Joules)
50 g Weight
100 g Weight
200 g Weight
500 g Weight
Chemistry Tongs
Metal Object

ANALYSIS

1)     How did the weight (force pulling down) affect the amount of work done on the object?

2)     How did the distance affect the amount of work done on the object?

3)     Compare/Contrast the trial with the least amount of work to that with the most amount of work.

4)     What is your Independent Variable?

5)     What is your Dependent Variable?

6)     What are your Constants?

Friction Lab Analysis Questions
1)  What is your Independent Variable?
2)     What is your Dependent Variable?
3)     What are your Constants?
4) Which surface had more friction?  Use your Data from the table to prove this. 
 

Conclusion

What was your problem?

Restate your hypothesis.  Was it right? wrong?  why or why not?

What did you learn in this lab?

What did you like about this lab?

What were some challenges you had to deal with?

What could you do next with this problem?  What other tests could you perform?

Write down any other additional thoughts, observations, inferences, etc.