Mr. Z's  Daily Internet Homework *

Part I:  Introduction to Waves

Mr. Z's Science Notes

What is a wave?        Lesson Review

1.  Do waves carry energy?

2.  What is a medium?

3.  If a wave requires a medium, what type of wave is it?

4.  Do the particles of a medium move forward with a wave?

5.  Does the energy move forward in a wave?

6.  In your bathtub, what happens to the waves when they hit the side of the tub?

Extended Learning Options:

What are two kinds of mechanical waves?       Lesson Review

1.  Draw a wave and label the crest and trough

2.  What are the  two types of waves?

3.  What type did you diagram in question #1 above?

4.  What are the two parts of a longitudinal wave?

5.  What is a longitudinal wave most often depicted as?

What are the features of a wave?        Lesson Review

1.  Draw a wave, and label crest, trough, amplitude, and wavelength.

2.  What type of wave did you just draw?

3.  Define frequency.

4.  What is the formula for the speed of a wave?

5.  Assuming the speed of a wave is constant:

6.  What would happen if the wavelength decreased?

7.  What would happen is the wavelength increased?

8.  What is the metric measure for frequency?

Extended Learning Option:

How are wave reflected?         Lesson Review

1.  What happens when a wave strikes a wall?

2.  Under the law of reflection, the angle of _____  =  the angle of _____.

3.  What is the imaginary perpendicular line called when using the law of reflection.

4.  Draw a reflection wave, and indicate the incident wave and reflection wave.

How are wave refracted?     Lesson Review

1.  Define refraction.

2.  Contrast refraction with reflection.

3.  Do waves travel through a medium straight lines.

4.  What happens to waves when the hit a medium of a different density.

5.  The bending of light that we see, is caused by what?

Part II:  Sound, Light & Electromagnetic Energy

What is sound?    Lesson Review         Play Some Pure Tone

1.  What type of wave is sound:  transverse or longitudinal?

2.  Is sound a mechanical wave? Why?

3.  Through which mediums does sound travel faster?

4.  Does sound travel through a solid?

5.  Does sound travel through water?

6.  What is the relationship between temperature and the speed of sound?

What is an echo?     Lesson Review

1.  What is an echo?

2.  What is a reflection?

3.  What animals use echolocation?

4.  What does the Navy use echolocation for?

5.  In order to use sonar:  a ship must be equipped with both a ____ and  a _____.

6.  What do doctors use sound echoes for?

How do you hear?      Lesson Review

1.  What are the three parts of the ear?

2.  What are the three bones of the middle ear?

3.  Briefly describe how "waves" enters the ear and turn into sound at the brain.

4.  What type of wave is sound?  (Transverse or Longitudinal)

5.  Is sound a mechanical wave? Why?

What is the Doppler Effect?      Lesson Review

1. What is the Doppler Effect?

2. Where do you  most often observe the Doppler effect?

3. How do meteorologists use the Doppler effect?

4. How do astronomers use the Doppler effect

What is light?      Lesson Review

1.  Light is a form of what type of energy?

2.  Light is made up  of small bundles of energy called?

3.  Is light a mechanical wave?

4.  Does light always travel in a straight line?

What are source of light?      Lesson Review

1.  Distinguish between illuminated and luminous

2.  Distinguish between opaque, translucent, and transparent?

3.  Is the moon a luminous object?

4.  What is the clear layer which covers the eye?

5.  Where, in the eye, does light first pass through?

6.  Which muscle controls the size of the pupil.

7.  Where is the retina located?

What is the electromagnetic spectrum?      Lesson Review

1.  What is the acronym for visible light?

2.  Which color has a longer wavelength:  red or blue?

3.  Do radio waves have a short wavelength?

4.  Do gamma rays have a low frequency?  What size W/L do they have?

Extended Learning Option:

Roy G Biv

PERFOMANCE INDICATOR 4.4:  Observe and describe the properties of sound,                                                                            light, magnetism, and electricity.

Major Understandings:

4.4a Different forms of electromagnetic energy have different wavelengths. Some examples of electromagnetic energy are microwaves, infrared light, visible light, ultraviolet light, X-rays, and gamma rays.

4.4b Light passes through some materials, sometimes refracting in the process. Materials absorb and reflect light, and may transmit light. To see an object, light from that object, emitted by or reflected from it, must enter the eye.

4.4c Vibrations in materials set up wave-like disturbances that spread away from the source. Sound waves are an example. Vibrational waves move at different speeds in different materials. Sound cannot travel in a vacuum.

4.4d Electrical energy can be produced from a variety of energy sources and can be transformed into almost any other form of energy.

4.4e Electrical circuits provide a means of transferring electrical energy.

4.4f Without touching them, material that has been electrically charged attracts uncharged material, and may either attract or repel other charged material.

4.4g Without direct contact, a magnet attracts certain materials and either attracts or repels other magnets. The attractive force of a magnet is greatest at its poles.

PERFOMANCE INDICATOR 4.5: Describe situations that support the principle of conservation of energy.

Major Understandings:

4.5a Energy cannot be created or destroyed, but only changed from one form into another.

4.5b Energy can change from one form to another, although in the process some energy is always converted to heat. Some systems transform energy with less loss of heat than others.

VOCABULARY:  ENERGY CONVERSION & CONSERVATION

 4.3 a 27 chemical reactions and heat transfer 4.3 a 27 heat transfer 4.4 f attract 4.4 attractive force(s) 4.4 f charged material 4.4 f 27 charged particles 4.4 e 27 circuits 4.4 b emit 4.4 a gamma rays 4.4 b object 4.4 g pole 4.4 b reflect 4.4 b refracting 4.4 f repel 4.4 c vibrational waves 4.4 c 27 vibrations 4.4 a visible light 4.4 e electrical circuits 4.4 d electrical energy 4.4 a 27 electromagnetic energy 4.4 a infrared light 4.4 b light 4.4 b 27 light energy 4.4 g 27 magnets 4.4 a microwaves 4.4 c sound 4.4 c sound waves 4.4 b transmit 4.4 a ultraviolet light 4.4 e vacuum 4.4 a wave length 4.4 a x-rays 4.5 absorb 4.5 b 27 heat energy 4.5 a 27 conservation of energy 4.5 b convert