Machines...

• are created by people to improve the weather.

• are created by people to make their work easier.

• are only used by the doctors.

• are dissapearing during the years.

Tags

NGSS.MS-ETS1-1

The machines can be divided in two groups:

• simple and difficult machines

• complex and easy machines

• simple and complex machines

• the three options are correct

A simple machine ...

• is a mechanical device for applying strenght and realizing work.

• is a musical instrument

• is an object that people use to remember things.

• is something that people use to locate other people.

Tags

NGSS.MS-ETS1-1

A complex machine ...

• doesn´t exist.

• is a machine very difficult to create.

• is a machine very difficult to use.

• is the combination of one or more simple machines together.

Tags

NGSS.MS-ETS1-1

How many types of simple machines do we know?

• 8

• 4

• 6

• 5

What type of machines are these?

• Complex machines

• Simple machines

• Normal machines

• The three answers are correct

What type of machines are these?

• Special machines

• Complex machines

• Simple machines

• Normal machines

Which are the names of the simple machines we know?

• Screw, inclined plane, pulley, and simple.

• Inclined plane, screw, wedge, pulley and complex

• Wheels and axle, screw, inclined plane, lever, pulley and wedge

• Simple and complex machines

What type of simple machine is this?

• Wedge

• Inclined plane

• Screw

• Wheels and axle

Tags

NGSS.MS-PS2-1

What type of simple machine is this?

• Pulley

• Inclined plane

• Wheels and axle

• Lever