Sound Energy
What is sound energy made by?
What are sound waves in the air? (Sound travels through sound waves in the air; vibrations)
What is a wave on water?
A disturbance that moves across water, making the water move up and down in place and transferring energy.
What happens to energy when two objects collide?
Possible Answer: Energy is transferred between them and can change their motion.
What is a conductor?
A material that allows energy (electrical or thermal) to flow through it easily.
What is an electric circuit?
Answer: The path through which electricity can flow.
Give two everyday examples of sound produced by vibrations.
Name one example from the unit that shows a floating object moving up and down with waves but not traveling with the wave.
Possible Answer: a bird or a bobbing cork on water.
Give one example from the unit of energy transferred by objects in motion.
Possible Answers:
Newton’s Cradle
Bat to ball
Bowling ball to pins
*Taken from Specificity
Name two good electrical conductors listed in your McGraw Hill Textbook.
Hint: The Table was glued in your ISN.
Answer: Copper and aluminum (also acceptable: graphite, salt solutions).
What three parts are listed as necessary for a simple circuit?
An energy source (battery), a path (wire), and an output device (e.g., light bulb); sometimes a switch/control device.
Explain how a vibrating object produces sound and how that vibration moves to our ears (use cause-and-effect language).
Possible Answer: The vibrating object makes nearby particles vibrate; those vibrations travel through the medium (air) as a wave and cause the eardrum to vibrate, which our brain interprets as sound.
Student-friendly: We can hear the teacher talking because as they speak, there are sound waves traveling in the air and then the student's ear takes the waves and our brain interprets it as english/Spanish being spoken.
How can you model the production of waves using simple materials on your desk?
Possible Answer: as long as the student depicts waves and how, when they collide together, they produce larger waves.
Objects in motion depict two types of energy. What are the two types of energy being used?
(HINT: K/P)
Kinetic and Potential Energy.
Give two examples of electrical insulators listed.
Glass and rubber (also acceptable: paper, plastic, wood).
What is the difference between an open circuit and a closed circuit?
A closed circuit is complete and working so electricity flows; an open circuit is broken and electricity cannot flow.
Identify one medium of sound.
(Medium – matter that transfers sounds)
Air, Water, or String
*Taken from Specificity
True or False: When you're swimming in the ocean, the waves push you left to right.
FALSE: The waves push you down and up, not left and right.
Describe a short investigation (one-sentence plan) students could do to show energy transfer during a collision. Include what they would observe.
Possible Answer: Roll a toy car into a stationary block and observe the car slow and the block move — showing energy transferred from the car to the block (and possibly sound/heat).
Explain how conductors play a role in transferring energy in a circuit and give an example of energy being produced.
Conductors allow electrical energy to travel through a closed path so the circuit’s output device (like a light bulb) can produce light or thermal energy.
Describe how electrical energy in a closed circuit can be transformed into thermal energy.
True or false — Sound can travel through empty space (vacuum)?
FALSE: Sound energy relies on liquids and solids to travel!
(Water - Throwing a rock into the water)
(Air - Hearing your teacher talk)
What do we call an object that sinks in water at first, but then rises to the top of the surface?
What is buoyancy?
buoyancy: the ability or tendency to float in water or air or some other fluid.
Give one example of kinetic and potential energy.
Teacher Choice:
Kinetic energy is the energy of motion, while potential energy is stored energy due to an object's position, condition, or state
Explain how a conductor and an insulator could be used together in a safe designed circuit or device.
Use conductive wires (copper) to carry current to the device and insulator coverings (plastic or rubber) around the wires to prevent accidental contact and heat loss.
Describe how electrical energy in a closed circuit can be transformed into another form of energy?
Electrical energy can become light energy (a bulb lights) and thermal energy (a filament or resistor warms up).