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List the energy changes that occur in a light bulb circuit? Chemical into electrical energy into light and heat energy $100

Wind the wire more times around the core, wind the coils tighter, stronger power source What is one way to make an electromagnet stronger? $200

In a complete circuit, the D-cell? a. Controls the path of electricity b. Supplies the power c. Reduces the power d. Carries the electricity through the circuit B. Supplies the power $300

A nail stuck to a permanent magnet picked up a small washer. The nail could pick up the washer because? The nail became a temporary magnet $400

If two bar magnets are attracting a paper clip which one will have a stronger force: the paperclip 5cm away or the paper clip 10 cm away? The paper clip that is closer to the bar magnet will have the greater force (5cm) $500

You should have lines of force, a circular pattern and the north and south pole of magnet labeled Draw and label a magnetic field on a white board. $100

What tool would you use to measure temperature? thermometer $200

In a circuit that tests for insulators and conductors, a light bulb is used to? a. turn on the circuit b. show that electricity is running through the circuit c. reduce the power of the circuit d. carry the electricity through the circuit B. show that electricity is running through the circuit $300

On a white board list two items that would be considered conductors? Paper clip, nail, steel washer, etc. $400

What is the force called between 2 magnets? Magnetic force $500

What are the necessary materials needed to build an electromagnet? D-cell, wire, steel rod (rivet) $100

In a complete circuit what is the purpose of the switch? Opens and closes the circuit $200

On your white board draw a closed circuit. Use: 1 D-cell - 1 wire - light bulb $300

Why would a magnet attract a paper clip even when a thin piece of cardboard was placed between the magnet and paper clip, but would not when a thick sponge was placed between them? With the sponge the distance between the magnet and paper clip was too far – out of the magnetic field $400

You are using donut magnets to pick up paper clips. What could you do to make your magnetic field stronger? Add more donut magnets $500

Define an insulator? An insulator is a material that does NOT allow electricity to flow through it $100

List two insulators? Rubber, cardboard, plastic, etc. $200

Do all of the following items conduct electricity: rubber band, coin, metal fork, aluminum foil, plastic fork? No – the rubber band and plastic fork do not $300

What is a material that DOES conduct electricity but does NOT attract to a magnet? Aluminum, copper, brass $400

Draw on your white board two bar magnets that will repel one another Either N-N or S-S facing each other $500

What object would be the best conductor of electricity: wooden bat, metal fork, rubber duck, plastic spoon? Metal fork $100

True or False? A magnet will attract to both a metal fork and a plastic fork. false $200

Which of the following is an example of electrical hazard? Dead battery, broken solar panel, electrical cord with exposed wires, unplugged electrical cord. Electrical cord with exposed wires $300

Which tool is used by a scientist to measure weight? Spring scale in grams or kilograms $400

Draw two bar magnets that will attract to one another? N-S or S-N $500