Available Answers

1. 1.

   Fill in the blank boxes in the mind map of simple machines.

   

2. 2.

   Multiple Choice Questions (MCQs)

   1. Which of these is a simple machine?
      1. Car
      2. Bicycle
      3. Sewing machine
      4. Screw
   2. Which of these shows a lever of class 1?
      1. F - E - L
      2. E - F - L
      3. E - L - F
      4. All of these
   3. Which of these simple machines does not increase or decrease force/
      1. Lever of class 2
      2. Single fixed pulley
      3. Inclined plane
      4. Wheel and axle
   4. Which of these is true for a winding road going up a hill?
      1. It is a simple mchine and work like a lever
      2. It is a simple machine and work like an inclined plane
      3. It is a simple machine and work like and axle
      4. It is not a simple machine
   5. A screw is very similar in function to a :
      1. Lever
      2. Pulley
      3. Inclined plane
      4. Wheel and axle
   6. Which of these machine decreases force?
      1. Lever of class 3
      2. Single fixed pulley
      3. Screw
      4. Wheel and axle
3. 3.

   Match the columns

   Column A	Column B
   a. Lever of class 1	(i) Uses a wheel and rope to pull a bucket of water from a well
   b. Lever of class 2	(ii) Taking a patient on a wheel chair up a ramp in a hospital
   c. Lever of class 3	(iii) Cutting paper with a pair of scissors
   d. Inclined plane	(iv) Opening a cold drink bottle with a opener
   e. Pulley	(v) Picking up diamond using tweezers
   f. Screw	(vi) Using a screw jack to life a car

    

4. 4.

   What is a machine?
5. 5.

   What is the difference between a simple and a complex machine?
6. 6.

   Roads on hills are made to have very gentle slopes. Why?