Energy Transformations

What is the law of conservation of energy?

• • A) Energy can be created and destroyed.

• • B) Energy cannot be created or destroyed, only transformed.

• • C) Energy can only be created.

• • D) Energy can only be destroyed.

Which of the following is an example of electrical energy being transformed into mechanical energy?

• • A) A roller coaster going down a hill.

• • B) Solar panels converting sunlight into electricity.

• • C) A battery-powered drill in use.

• • D) Water flowing in a river.

What is the equation for kinetic energy?

• • A) KE=mv^2

• • B)KE=1/2​mv

• • C) KE=1/2mv^2

• • D) KE=mc^2

Einstein's mass-energy equivalence equation is represented by which formula?

• • A) KE=1/2mv^2

• • B) E=mc^2

• • C) PE=mgh

• • D) F=ma

In the context of energy transformations, what is potential energy?

• • A) The energy of motion.

• • B) The energy stored in chemical bonds.

• • C) The energy stored due to an object's position or configuration.

• • D) The energy related to temperature.

Which form of energy is directly related to the temperature of an object?

• • A) Kinetic energy

• • B) Potential energy

• • C) Thermal energy

• • D) Electrical energy

In a hydroelectric dam, which type of energy transformation occurs?

• • A) Chemical energy to kinetic energy

• • B) Gravitational energy to electrical energy

• • C) Solar energy to electrical energy

• • D) Kinetic energy to thermal energy

What kind of energy transformation occurs in solar panels?

• • A) Chemical energy to electrical energy

• • B) Thermal energy to kinetic energy

• • C) Solar energy to electrical energy

• • D) Potential energy to kinetic energy

Which of the following best illustrates the transformation of potential energy to kinetic energy?

• • A) A battery-powered drill in use.

• • B) A roller coaster descending a hill.

• • C) Solar panels generating electricity.

• • D) A light bulb emitting light.

During the use of a battery-powered drill, which forms of energy are primarily involved?

• • A) Chemical energy to electrical energy

• • B) Chemical energy to kinetic and thermal energy

• • C) Electrical energy to thermal energy

• • D) Solar energy to kinetic energy