How many parts do simple machines have?
One or two parts
What simple machine is this? A) Lever B) Pulley C) Wedge
C) Wedge
True or false: Tools and machines help people every day to make work more dificult.
False. Tools and machines help people everyday to make work easier.
Name the 6 types of simple machines we studied in this unit.
1. Lever 2. Wheel and axle 3. Pulley 4. Inclined plane 5. Wedge 6. Screw
We use a ____________ to lift objects.
Pulley
We use a _______________ to cut objects.
Wedge
What simple machine is this?
A screw
What do we call machines with more than two parts?
Complex Machines
True or False: Complex machines make dificult or dangerous tasks easier.
True
True or False: Some complex machines need electricity to work?
True
What do we use a telephone for? A) To wash clothes B) To communicate with people C) To go from one place to another
B) To communicate with people
True or False: A simple machine has many moving parts.
False. A simple machine has a few or no moving parts.
Is this a complex or simple machine?
Complex
Is this a complex or simple machine?
simple
Is this a complex or simple machine?
Simple
Is this robot a complex or simple machine?
complex
