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Grade 8- Mechanical Systems Section 1.0

Last updated almost 5 years ago

6 questions

2

4

2

6

6

6

Question 1

1.

How can you determine if a device is a simple or a complex machine?

Question 2

2.

Determine if your body is a simple or a complex machine. Explain in detail.

Question 3

3.

Why does a car have a transmission but a bicycle doesn’t? Explain in detail.

Question 4

4.

Explain how using levers, gears, or other ways of linking components improves the operation of the following devices:
a) scissors
b) bicycle
c) eggbeater

Question 5

5.

Describe three jobs that depend on the use of machines. List the type of machine(s) used with each job.

Question 6

6.

Look at the machine in the above picture, and then answer the questions below.
a) Is this device a simple or complex machine? Explain your answer.
b) What do you think the source of energy is for this machine? How do you know?
c) Do you think this device could work in real life? Why or why not?