Labels

Monday, December 15, 2014

Chapter 3 - Work and simple Machines

A. RE pp. 41-42: Before You Read, 1. Identify, 2. Calculate, 3. Infer

B. Work (Joules) = Force (Newtons) X Distance (meters)
1. Force = 5 Newtons, Distance = 8 meters, Work = ____ Joules?
2 Force = 10 N, Distance = 10 m, Work = ___ J?
3. Distance = 15 m, Force = 20 N, Work = ___ J?
4. Work = 30 J, Distance = 6 m, Force = ___ N?
5. Work = 55 J, Force = 5 N, Distance = ___ m?

C. RE: C3S2 – Before You Read,
 Calculate, 2. Describe, 4. Identify, 5. Evaluate

D. R.E.: p. 47 “Friction”, 4. Identify, 5. Evaluate

E. - Before You Read, Identify Simple Machines, 1. Evaluate, 2. Calculate, 3. Explain, 5. Analyze 
- p. 54: After You Read #1,2,3
- Add the Mini Glossary words and definitions to your Science Notebooks Glossary
 

 

Tuesday, December 9, 2014

LAB #4 – Simple Machines Help Us

LAB #4 – Simple Machines Help Us

Problem: How do the various 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) Explain: How do simple machines make our lives easier?
               
2) Identify and Infer: 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) Synthesis: Design your own compound machine; use at least 4 different simple machines.
                
5) Analysis: What is the relationship between the simple machines in this lab and ones found in your home?  

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.