4 th grade CATS Science Review Properties of Heat Electricity Circuits Magnetism Jamey Herdelin Maupin Elementary April 2004 PowerPoint template by Anna Jones

HeatElectricityCircuitsMagnetism

Column 1, #1 Heat – what is it? A form of energy.

Column 1, #2 What kind of heat is produced when two objects rub against each other? Friction

Column 1, #3 Conduction – the process of transferring heat from 1 molecule to another. Example is a metal pan placed on a stove. Heat rises up the sides of the pan and to the handle. Heat can travel by conduction or be absorbed. What does conduction mean and give an example.

Column 1, #4 Define heat absorption and give an example. Absorption – heat is taken in and held in an object. Example is the black driveway on a sunny day absorbs the sun’s rays and gets hot.

Column 1, #5 It will turn from a solid into a liquid, possibly even into a gas. What happens when you add heat to a solid mass like water? What state of matter will it become?

Column 2, #1 The flow of negative charges through matter. What is an electric circuit?

Column 2, #2 It is a measure of how much a material opposes the flow of electric current and changes electric current into heat energy. What is resistance, in terms of electric currents?

Column 2, #3 Light bulbs What do we use daily in our homes that lights your life because it has a coiled wire inside that has high resistance?

Column 2, #4 A conductor – metal, water What do you call a material that allows electric current to pass through easily? Give an example.

Column 2, #5 What do you call a material that does not let an electric current pass through easily? An insulator - glass, wood, rubber, plastic

Column 3, #1 It needs a source of electricity (like a battery); some type of conductor (metal wire), that forms the path; a control device (switch) to control the electric current; and an appliance (light bulb, motor, loudspeaker). What 4 things does an electric circuit need to work?

Column 3, #2 What happens to a light bulb if the electric circuit is an open circuit? It does not light up because there is a break somewhere in the circuit – the electric current has been stopped.

Column 3, #3 What kind of circuit do you create when you flip a switch and the ceiling fan starts moving? Created a closed circuit because electric current is flowing.

Column 3, #4 A series circuit contains a couple of objects along a single path. A parallel circuit connects several objects in a way that the current for each object has its own path. What is the difference between a series circuit and a parallel circuit?

Column 3, #5 In a series circuit, the 2nd light bulb is out because the circuit is open. In a parallel circuit, the 2nd light bulb is on because it has its own closed circuit. If you have a circuit with 2 light bulbs, what happens to the 2nd light bulb if the first light bulb in a series circuit is loose; what happens if it is a parallel circuit?

Column 4, #1 What is a magnet and give an example of when we use them? A magnet is anything that pulls iron, steel, and certain other metals together. Examples are magnets on the refrigerator door & the refrigerator door.

Column 4, #2 Attraction What term describes a magnet’s ability to pull things towards it - attraction or repulsion?

Column 4, #3 Repulsion What term describes a magnet’s ability to push things away – attraction or repulsion?

Column 4, #4 Electricity What can you make from magnets? Hint - if you are seeing this question on a big screen, a magnet helped get it there.

Column 4, #5 What happens to a coil of wire when you run electricity through it? What is it called? It becomes a temporary magnet & is called an electromagnet.

Bonus Question 1

Bonus Question 2