Energy Transformations
What are the 2 types of energy being converted when you plug in a hot plate?
electrical to thermal
If a pencil in a beaker of water looks bent, what is happening to the light?
being refracted (bent) and changing speed from the air to the water
What is the unit of measurement for the volume of sound?
decibels
If a switch is closed, is it a complete or incomplete circuit?
complete
What type of energy does a hammer require to perform its function?
Mechanical
What are the 3 types of energy being converted if water in a beaker is on a hot plate and the water molecules start moving faster?
electrical to thermal to mechanical
Can sound travel through space? Explain with many details.
Sounds requires a medium (state of matter) to travel through. Gas, water, and solids are necessary. There is no air in space therefore travel cannot travel.
What types of energy is lightning?
electrical, light, thermal (natural form of electricity)
What are the 2 types of energy being converted when you strum the strings of a guitar and they vibrate?
mechanical to sound
A student uses a set of headphones to listen to music. Which item uses the same type of energy as the headphones to make sound and why? A flute, keyboard, or teapot.
The keyboard requires electrical energy just like the headphones. Even wireless headphones require to be charged , this is still electrical energy.
What is the difference between a series or parallel circuit?
Series=1 pathway
Parallel=2 or more pathways
Why does a fisherman have a hard time catching fish just by simply looking at the fish? Explain with many details.
Refraction is causing the fish to appear to be in one place, but it is in another place.
What are the 2 types of energy being converted when you cook soup on the stove?
electrical to thermal
Reflection or Refraction? Telescope, Binoculars, Hand Lens
Refraction
How does sound travel?
vibrations
If you want to build a circuit that makes a sound, what 3 pieces of equipment are required to make the complete circuit?
battery, conductors, buzzer
Where does a roller coaster car have the most potential energy?
at the top of the biggest hill
What are the 3 types of energy being converted when a battery is in a circuit lighting a bulb?
chemical to electrical to light
Reflection or Refraction? Metal spoon, Foil, Mirror
Reflection
What is pitch?
How high or low a sound is.
If no electricity is available, how could you boil water?
Put it in a container made of a conductor and heat it over a fire.
Mechanical refers to what type of energy?
energy of motion and position (Kinetic + potential)