Force , Work and Energy

1. Which of the following simple machines would you use to open a soda bottle?

• Lever

• inclined plane

• Screw

• Pulley

2. Choose the odd one out from the properties of screw.

• Has two slanting surfaces

• Simple machine

• Has cylindrical shape

• Can be turned using screwdriver

3. Which of these is a renewable source of energy?

• coal

• petrol

• wood

• sun

4. The ability to do work is called________.

• force

• machine

• energy

• work

5. Identify the simple machine which is a form of two inclined planes joined together.

• lever

• wedge

• screw

• wheel and axel

Tags

NGSS.MS-PS2-1

6. Geothermal energy is obtained from the

• sun

• wind

• water

• Earth's interior

7. Frictional force ______ the motion of an object7.

• opposes

• help

8. We use ______ to make our work easy.

• machine

• muscles

9. Levers are slanting surfaces used to push or pull heavy objects to a certain height.

• true

• false

Tags

NGSS.MS-PS2-1

10.The force applied by the Earth on the object called _________ force.

• Frictional

• muscular

• Gravitational

Tags

NGSS.MS-PS2-4