Which statement is true?
There are many types of forces.
There are only one type of force.
There are only two types of force.
There are only three types of force.
Which make our work easier and faster?
Simple machines
Generators
Cars
Inverter
Why should energy sources be used carefully?
Because energy sources are in limited supply.
Because energy sources are present in abundance.
Because energy sources are renewable.
Because energy sources are present in unlimited supply.
Which force tries to pull two objects towards each other?
Mechanical force
Muscular force
Gravitational force
Frictional force
When we burn lights in our house:
Electrical energy is converted into light energy
Electrical energy is converted into sound energy
Electrical energy is converted into heat energy
Electrical energy is converted into mechanical energy
Which energy converts kinetic energy from falling water into electricity ?
Solar energy
Wind energy
Hydropower
Geothermal energy
Geothermal energy is called a renewable energy source because:
Heat is continuously produced by earth
Heat is continuously produced by fire
Heat is continuously produced by sun
Heat is continuously produced by humidity
The source of energy stored inside the earth is called:
Water energy
Which is an example of force changing the shape of an object?
Pulling of trolley bag
Pushing open a door
Stretching of rubber band
Hitting of foot ball
What is solar energy?
Energy we get from earth
Energy we get from water
Energy we get from wind
Energy we get from sun
