CBSE Class 6 Science Machines Worksheet

1. Scissors

a) List two types of simple machines used in scissors:

1.

2.

b) Label the fulcrum, the point of effort application, and one possible point of load application on the

drawing to the right.

2. Adjustable wrench

a) List two types of simple machines used in an adjustable wrench:

1.

2.

Mechanical advantage:

3. Can opener

a) List three types of simple machines used in the can opener:

1.

2.

Machines

1. State True or False and if False rewrite the correct statement

i) In a beam balance the load arm and effort arm are equal.

ii) A wheel barrow is a lever of first order.

iii) A movable pulley helps to apply the effort in a convenient direction.

iv) A crowbar helps us to move a heavy rock.

v) Mechanical advantage of a single fixed pulley is 1.

2. A man applies an effort of 50 N to lift a load of 200 N. The distance of the load from the fulcrum is 10 m. Find the effort arm and mechanical advantage.

3. One boy of weight 80 N is sitting on one side of a sea – saw at a distance of 1 m from the fulcrum. Where must another boy of weight 40 N sit in order to balance the sea – saw.

1. Name the different Class of levers, draw a simple diagram for each and write two examples each.

2. Define the following terms Efficiency and Velocity ratio.

1. How do machines help us. Write four points

2. Name the different types of simple machines.

3. Write the law of the lever.

4. Define Mechanical Advantage.

1. Define inclined plane and give examples of inclined plane used in daily life.

2. Define screw.

3. Define wedge and give two examples of wedge used in daily life.

4. Define wheel and axle.

1. Define pulley. State its types.

2. Cite examples of pulleys used in daily life.

3. Draw single and movable pulley.

1. Define and draw the different types of lever with appropriate examples.

Lever of First Order: ______

examples:________

Lever of Second Order:_____

examples:_______

Lever of Third Order with examples ____________

examples:_______

1. Define simple machines?

2. Define lever. State its principle.

3. Explain the principle of lever.

4. State the mathematical expression for mechanical advantage of lever.

5. Define the different types of lever with appropriate examples.

1. List the six simple machines, their principles and uses. Draw a sketch of each one.

2. Simple Machine Vocabulary: Define the following concepts about simple machines.