
A fifth-grade class constructed this circuit. Which of these objects most likely made the light glow when connected to points X and Y?
a. Plastic straw
b. Cotton string
c. Aluminum foil
d. Rubber eraser
c. Aluminum foil
What must happen to an object or substance in order to produce sound?
Which of the above waves has the longest wavelength?
Wave #3
The material that best conducts heat and electricity
A) metal
B) plastic
C) rubber
D) wood
What is metal (A)
In which medium does sound travel the SLOWEST: air, water, or wood ?
What is air?
Describe if light would pass through the following object. The object is described as ______ when light interacts with it.

No light would pass through a brick wall because it is opaque.
Students build a simple electrical circuit by attaching wires to a battery, a lamp, and a switch. They close the switch as shown.
When the students open the switch, the lamp
A) lights up.
B) becomes dim.
C) turns off.
D) becomes hot.
C) turns off.
Through which of these does sound travel fastest: air, water, or wood?
What is wood?
When light is absorbed by an object, the light energy is converted into ______ energy.
What is heat or thermal energy?
A conducting wire wrapped in plastic protects the user because the plastic
A) keeps the wire cool.
B) allows heat to move freely.
C) is a good electrical insulator.
D) has magnetic properties.
What is a good electrical insulator?
C
A sound that bounces back.
What is an echo?
The fork appears bent underneath the water.

What is refraction?
One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The students place the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?
A) The balloon has a positive charge and the comb is neutral.
B) The balloon and the comb have the same electrical charge.
C) The balloon has a negative charge and the comb is neutral.
D) The balloon and the comb have opposite electrical charges.
B) The balloon and the comb have the same electrical charge.

How would the following musical instrument produce sound?
a. hitting
b. strumming strings
c. blowing air
a. hitting
Meg is walking through a Christmas light display. She sees red, yellow, green, and blue lights. She says that if the wavelengths from these lights were put together, it would make white light. Is she correct? If she is incorrect, what is the proper correction?
No, white light is the sum of all the colors in the visible spectrum (ROYGBV). There would also need to be orange and violet lights.
When electrical energy flows through a toaster, what type of energy is produced (main function of a toaster)?
What is thermal energy (or heat)?
Why can't we hear astronauts talking in space without radios?
What is a medium (media)?
Andre is analyzing a model of a transverse wave. He counts the number of waves that pass a given point during a given time. When Andre counts waves, what is he trying to find?
What is the frequency?
A wire creates this around it when electricity flows through it.
What is a magnetic field?
Julia and Raymond are both in chorus. Julia's vocal cords vibrate more quickly than Raymond's. Julia is likely to have a ___________ pitch.
What is a higher pitch?
Oliver put new curtains up in his bedroom. When he closes the curtains, a little sunlight still passes through. Are the curtains transparent, translucent, or opaque?
What is translucent?
A student builds two circuits: one with copper wire and one with rubber-coated wire as the main conductor. Predict which circuit will work and explain why using what you know about conductors and insulators.
What is the copper wire circuit will work because copper is a conductor; the rubber-coated wire won't because rubber is an insulator and blocks the flow of electricity?
Which of the following statements describe sound? Select all that apply.
Sound travels in compression waves.
Sound travels in transverse waves.
Sound cannot exist without vibrations.
Sound can only travel through liquids and gases.
1. Sound travels in compression waves. &
3. Sound cannot exist without vibrations.
Order the colors of the Visible Light Spectrum from most energy to the least amount of energy.
What is violet, blue, green, yellow, orange, and red?
Describe what happens to the electrical energy when you turn on an electric fa
What is the electrical energy transforms into mechanical energy, which makes the fan blades spin?
A student plans to investigate how sound changes when 4 bottles with different amounts of liquid are struck with a mallet. In which order must the bottles be placed so that the sound changes from a low pitch to a high pitch?

B, A, D, C
How can radiant energy impact plant life?
a. diminishes plant growth through decay
b. increases oxygen levels for plant life
c. reduces carbon dioxide given off by plants
d. facilitates plant growth through photosynthesis
d. facilitates plant growth through photosynthesis
George created an electromagnet in science lab. He wants to increase the strength of his electromagnet.
Which of the following can he do to strengthen his electromagnet? Select all that apply.
a. increase the number of coils
b. add plastic to the core
c. increase the current
d. decrease the number of coils
a. increase the number of coils and
c. increase the current
If I have a high pitch describe my frequency and my vibrations.
What is a high frequency and many vibrations?
Which tool is used to separate white light into the color spectrum? 
