2. 4 th grade CATS Science Review Properties of Heat Electricity Circuits Magnetism Jamey Herdelin Maupin Elementary April 2004 PowerPoint template by Anna Jones

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

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

6. 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.

7. 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.

8. 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?

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

10. 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?

11. 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?

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

13. 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

14. 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?

15. 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.

16. 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.

17. 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?

18. 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?

19. 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.

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

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

22. 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.

23. 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.

24. Bonus Question 1

25. Bonus Question 2