CBSE Class 5 Science Simple Machines Worksheet

1. Fill in the blanks

i. A screw is a kind of ..................

ii. Scissors is an example of .................. order of lever.

iii. In the lever of first order, the .................. is in between the load and the effort.

iv. A .................. is a wheel with a groove in its circular edge.

v. A .................. is an inclined plane wrapped around a cylinder or a rod.

vi. A .................. is a double inclined plane.

vii. Objects that float, displace water .................. to their own weight.

viii. The weight of an object in water is called its .................. weight.

ix. The weight of an object in air is called its .............. weight.

x. The upward push of water on a floating object is called .............. force.

2. Name the following

i. Two examples of a wedge

a) ..............

b) ..............

ii. Two examples of an inclined plane

a) ..............

b) ..............

iii. Two examples of a lever of first order

a) ..............

b) ..............

iv. Two examples of a lever of second order

a) ..............

b) ..............

V. Two examples of a lever of third order

a) ..............

b) ..............

3. Write True or False

i. Machine makes our work easier. [ ]

ii. A claw hammer is an example of lever of third order. [ ]

iii. A screw is a kind of inclined plane. [ ]

iv. Scissors is an example of the first order of lever. [ ]

V. The weight of an object in water is called its apparent weight. [ ]

1. Name the six types of simple machines 1…………………….. 2………………..… 3…………..……….. 4……………….…….. 5………………………. 6…………………….…

2. Name the three kinds of lever 1…………….……….. 2……………………..…….. 3……………..……

3. A wheel with a groove in its circular edge ……………………...

4. When an object is immersed in a liquid its weight acts in the ……………..………. direction and the upthrust acts in the …………………..… direction.

5. The difference between the actual weight of the object and its apparent weight is equal to the weight of the water …………………….

6. A wedge is a double ………………………

7. Some objects ………………….. on the water and some objects …………………… in the water.

8. Name any 3 floating objects 1……………………….….. 2………..……….…… 3……………….………. and any 3 sinking objects 1……………..…… 2……………..… 3……………..…

9. The weight of an object in water is ……………………….…. than the weight in air.

FILL IN THE BLANKS

1. Claw hammer and scissors are examples of lever of ____________ order.

2. If we place two inclined planes together, back to back, we get a _______________________.

3. The downward force which you apply on a tin for opening the lid is called __________________

4. The stick trough which force is applied for lifting the boulder is considered as ____________________.

5. In which order of lever, the fulcrum is at the centre and load and effort are on the opposite sides ____________________.

6. Tongs, bread knife, forceps etc are the common examples of levers of _________________ order.

7. A slide in a park is based on which simple machine ___________.

8. An axe is a wedge used as a ___________________.

9. A man rowing a boat is an example of lever of _______________ order.

10. When an object floats on water it displaces water equal to its

11. The apparent loss in weight of an object is _______________ to the weight of water ________________.

12. The weight of an object in water is called its ________________ weight and the weight in air is called ______________ weight.

13. Objects float, because the _________________ force supports their weight.

14. Give two example of each of the following.

1. An inclined plane ________________ ________________

2. First order of lever ________________ ________________

3. Second order of lever ________________ ________________

4. Third order of lever ________________ ________________

5. A wheel and axle ________________ ________________

6. Wedge ________________ ________________

NAME THE FOLLOWING

1. An inclined plane wrapped around a cylinder or a rod
_________________________.

2. It consists of two cylinders which revolve round a common point
_________________________