G.5..FORCE, WORK & ENERGY..2021

G.5..FORCE, WORK & ENERGY..2021

Do you know that for any work we use force?

Multiple Select

Tick the effects of forces from the following.

• Move an object

• Grow an object

• Change the shape of an object

• Stop a moving object

Multiple Choice

Which image displays the effect of force changing the shape of an object?

Multiple Choice

which of the following work is done by the muscular force?

• Riding a bike

• Earth revolving around the sun

• Slipping on stairs

Multiple Select

Identify the gravitational force from the images given below.

Multiple Choice

Which of the following work cannot be done without friction?

• Flying

• Writing

• Sleeping

HIGHLIGHTS PAGE. NO: 79 & 80

LOOKING BACK ACTIVITY - PAGE. NO : 81

Multiple Choice

Which force makes the material go back to its original state?

• Gravitational force

• Mechanical force

• Elastic force

• Frictional force

Multiple Choice

Which image shows that more work is being done?

Multiple Select

Machines are the tools that make our work ____________ and ______________.

• difficult

• easy

• delay

• effortless

Multiple Select

Identify the complex machines from the following.

Multiple Choice

In a lever the force applied to move a load is called as ___________________ .

• Load

• Fulcrum

• Effort

• Lever

Multiple Choice

Which is the fixed point in a lever?

• Effort

• Fulcrum

• Rod

• Load

HIGHLIGHTS - PAGE. NO: 81 & 82

Multiple Choice

Which lever has a fulcrum in the center?

• First class lever

• Second class lever

• Third class lever

Multiple Select

Identify a second class lever from the following.

Multiple Choice

A fishing rod is an example of which class of lever?

• First class

• Third class

• Second class

Multiple Choice

Identify the second class lever from the following.

• Load-fulcrum-effort

• Fulcrum-effort-load

• Fulcrum-load-effort

Multiple Choice

Two inclined planes make a __________________.

• lever

• wedge

• fulcrum

Multiple Choice

The winding road on a mountain is an example of:

• Wedge

• Inclined plane

• Both

HIGHLIGHTS - PAGE . NO: 83 & 84

Multiple Select

Identify the simple machines with inclined planes in them.

• Wedge

• Nail

• Screw

• Chisel

• Pulley

Multiple Choice

The Screwdriver is an example of which simple machine?

• Pulley

• Wedge

• Wheel and Axel

Multiple Choice

What do you call a grooved wheel with the rope passing around it?

• Wheel and axel

• Pulley

• Screw

• Wedge

LOOKING BACK ACTIVITY - PAGE : 86

HIGHLIGHTS - PAGE.NO: 85 & 86

Multiple Choice

Which energy helps us see things when it is reflected?

• Heat energy

• Sound energy

• Light energy

• Electrical energy

Multiple Choice

Which energy is generated when objects vibrate?

• Sound energy

• Light energy

• Heat energy

Multiple Choice

Sound energy can be transferred through:

• Solid, liquid and gas

• Only liquid

• Only liquid

• Only gas

Multiple Select

The windmill can be used for the following:

• To produce sound

• To generate electricity

• To get wind

• To grind grains

Multiple Choice

Identify the source of solar power.

• Wind

• Water

• Sun

• Earth

Multiple Choice

Geothermal energy is present inside the ________________.

• Sun

• Earth

• Water

• Wind

Multiple Choice

Which of the following energy is not good for our environment?

• Electrical energy

• Solar energy

• Wind energy

HIGHLIGHTS - PAGE. NO: 86,87,& 88

LOOKING BACK ACTIVITY - PAGE: 88