What are 2 examples of simple machines?
Lever, pulley, wheel and axel, inclined plane, screw...
What are 2 examples of complex machines?
Computer, sewing machine, construction equipment, etc....
Machines need ____________ to work!
Energy
What source of energy is powering this machine?
Solar energy
What source of energy is powering this machine?
Human energy
What source of energy is powering this machine?
Wind energy
True or false? I SHOULD give my personal information (like my home address) to strangers on the internet.
False
True or False? I can use the internet WITHOUT asking my parents for permission.
False
What materials make good electrical conductors (electricity CAN easily flow through them)?
Metal, water...
What materials make good electrical insulators (electricity CANNOT flow through them)?
Wood, plastic, glass...
What type of energy does this rollercoaster have?
Electrical energy, mechanical energy
What type of energy is stored in food?
Chemical energy
What type of energy is produced by the sun?
Light energy, thermal energy
Electrical energy changes into ___________ energy.
Thermal energy
True or False? NEVER use an electrical appliance near water.
True
Does this show safe behavior around electricity? Why or why not?
No, because the power socket is overloaded
