Force, work and energy Revision

Force is a ______ or ______ applied on an object.

• push, pull

• position , location

• motion, rest

Tags

NGSS.MS-PS2-1

Force can move a stationary object or stop a moving object.

• True

• False

Tags

NGSS.MS-PS2-2

Identify whether work is done or not in the picture

• Yes

• No

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Identify the simple machine

• Wheel and axle

• Lever

• Pulley

• Wedge

In order to experience frictional force , minimum ______ surfaces have to be in contact.

Smooth surfaces offer _______friction comparing to rough surfaces.

• less

• more

_______ is applied when we use our muscles.

• Muscular force

• Gravitational force

Gravity is a type of friction.

• True

• False

Draw a simple machine

Tags

NGSS.3-5-ETS1-1

NGSS.3-5-ETS1-2