Which energy transformation happens when a toaster is plugged in to an outlet in the wall and used to make toast?(1 point)
Responses
Electrical energy from the outlet is converted to heat and chemical energy in the toast.
Electrical energy from the outlet is converted to heat and chemical energy in the toast.
Electrical energy from the outlet is converted completely to chemical energy in the toast.
Electrical energy from the outlet is converted completely to chemical energy in the toast.
Electrical energy from the outlet is converted completely to heat energy for the toaster.
Electrical energy from the outlet is converted completely to heat energy for the toaster.
Electrical energy from the outlet is converted to heat and light energy for the toaster.
Electrical energy from the outlet is converted to heat and light energy for the toaster.
Solar cells are used to power a person’s house. Which statement about the process is correct?(1 point)
Responses
Energy from the sun might be less than the energy needs of the house, but solar cells make up for this difference.
Energy from the sun might be less than the energy needs of the house, but solar cells make up for this difference.
Energy from the sun might be greater than the energy needs of the house because some energy is destroyed in the process.
Energy from the sun might be greater than the energy needs of the house because some energy is destroyed in the process.
Energy from the sun might be greater than the energy needs of the house, so some energy will be stored and/or wasted.
Energy from the sun might be greater than the energy needs of the house, so some energy will be stored and/or wasted.
Energy from the sun will equal the energy needs of the house because energy is not created or destroyed.
Energy from the sun might be greater than the energy needs of the house, so some energy will be stored and/or wasted.
A particular circuit is made up of a battery, a switch, a buzzer, and wires connecting the components. All of the components are in working order, but the buzzer does not make noise. Which statement explains this observation?(1 point)
Responses
The circuit lacks a power source.
The circuit lacks a power source.
The conductors are not attached.
The conductors are not attached.
The load cannot convert electrical energy.
The load cannot convert electrical energy.
The switch is open.
The switch is open.
Which purpose does a light bulb serve in a circuit?(1 point)
Responses
cell
cell
load
load
wire
wire
switch