Explain & Draw each of the following Transparent, translucent, opaque Electromagnetic spectrum Conduction, convection, radiation Open & closed circuit Series & parallel circuit 10 minutes End 5 minut es End

Transparent, translucent, opaque Transparent – light passes through, objects appear clear Translucent – some passes through, some is blocked or reflected, objects appear blurry Opaque – light does not pass through, casts a shadow

Electromagnetic spectrum

Conduction, convection, radiation Conduction – direct contact Convection – flow of a liquid or a gas Radiation – The transfer of thermal energy through electromagnetic rays

Open & closed circuit Open circuit – the light is off Closed circuit – the light is on

Series & parallel circuit Parallel Circuit – one light goes out the rest Stay lit Series Circuit – one Light goes out, they all Go out.

1. The graph below shows the wavelengths of the colors of the spectrum Which color has the shortest wavelength? violet

2. The graph below shows the wavelengths of the colors of the spectrum Which color has the highest frequency? violet

3. The graph below shows the wavelengths of the colors of the spectrum Which color has the longest wavelength? red

4. The graph below shows the wavelengths of the colors of the spectrum Which color has the longest frequency? red

5. What kind of energy from the Sun can cause sunburn Ultraviolet radiation

6. What describes how sound waves travel? outward in all directions

7. What are the parts of the diagram below? A. Wavelength B. amplitude C. trough D. crest

8. As the amplitude of a sound wave increases, its volume _______ increases

9. Insulation is used to prevent heat flow

10. Which part of the electromagnetic spectrum has waves of the shortest wavelength gamma rays

11. The following is a diagram of the electromagnetic spectrum divided into four parts. A. radio waves B. infrared waves C. visible light D. gamma rays

12. Which type of circuit has only one path for the electric current? Series circuit

13. A two-story house is warmer on the second floor and cooler on the first floor due to the principle of what? convection

14. How does heat travel through solids? conduction

15. Which is the energy associated with the movement of electrons from one place to another? electricity

16. What is electricity? A form of energy

17. Describe how heat will be transferred when adding new fish to a fish tank if the water in the tank is 20°C and the water in the bag is 27°C? Heat will move from the bag of fish to the water in the tank

18. What measure identifies the pitch of a sound? frequency

19. Which is the weakest type of electromagnetic waves? Radio waves

20. What is an example of mechanical energy? car

21. What is stored energy ? Potential energy

22. What is the energy of motion? Kinetic energy

23. The flow of charged particles moving through a circuit is _________. current

24. Why are metals conductors of heat? Metal absorb heat and distribute it evenly, also they have few valence electrons

25. Which picture correctly shows heat flowing? 2

26. What does the diagram help explain? The areas of strength in a magnetic field

27. A student hypothesizes that sound travels faster through glass than through plastic or wood. He performs an experiment and gathers his data. The following graph shows his data. What is a good conclusion? Sound travels fastest through plastic

28. The table below shows the thermal conductivity of different materials. Substances with higher values conduct heat better. Which material warms the fastest? Copper

29. A lit fireplace at one end of a large room warms people standing on the opposite end of the room by ___. radiation and convection.

30. A windmill harnesses the power of __________ mechanical energy that can be converted into electrical.

31. Friction between a skateboard wheel and the surface produces heat energy

32. What is an example of chemical potential energy? A battery Food

33. What is an example of kinetic energy? Moving car Bouncing ball

34. An echo is heard when sound waves are ______. Reflected from a surface

35. A material that allows most of the light that strikes it to pass through and form a blurry image is called what? translucent

36. Which is a mirror that curves inward? Concave mirror

37. If the frequency increases the wavelength Decreases.

37. What do vibrating molecules in any matter emit? Infrared waves

38. Which describes an increase in a material’s volume when its temperature increases? Thermal expansion

39. An object that absorbs all the colors in the visible spectrum will appear black

40. Study this diagram of a ray of light shining on a glass window. How will the ray of light travel through the glass? It will bend towards the normal.