4th Making Connections

Which list contains the items that would conduct electricity?

• nail, brad, plastic comb

• paper clip, penny, iron screw

• cork, dollar bill, tweezers

• paper, eraser, wood

What could be the reason a circuit would not light?

• The circuit is simple

• The circuit is a complete path

• The circuit needs a battery

• The circuit is not a complete path

Which forms of energy are given off by a light bulb?

• Heat and light

• light and mecanical

• light and sound

• heat and magnetic

What is a physical property of metals?

• metals are insulators of electricity

• metals conduct electricity

• all metals are attracted to magnets

• insulators are attracted to magnets

Why is it wise to use an oven mitt when taking a metal pot out of the oven?

• both the mitt and metal conduct heat well

• metal is a good conductor of heat while fabric/rubber is an insulator

• metal and fabric/rubber do not conduct heat well

• metal and plastic are both insulators

An electric motor in a car is designed to turn electrical energy into?

• sound energy

• heat/thermal energy

• light energy

• mechanical energy

What simple circuit will light a light bulb? (two answer choices)

• a battery, one wire touching + and - , and the light bulb metal touching the wire and + or - side

• a battery with two wires touching the + end of the battery and the other side touching the light bulb

• a battery, one wire touching + and -, and the light bulb metal sideways with the wire touching the tip of the light bulb

• no battery

How could a metal disc pick up a car?

• If it had claws

• If it was tied on

• If Mrs. Grassel was under it

• If the disc was magnetic

How did you increase your electromagnet strength increase?

• The strength cannot be increased

• Use a shorter wire around the nail

• Increase the number of coils around the nail

• Switch the direction of the north and south poles

You and your friend were playing on a seesaw, what types of energy would you most exhibit?

• light and magnetic energy

• sound and mechanical energy

• mechanical and electrical energy

• heat and electrical energy