RFMS Science: Energy & Heat Transfer CSA Review 2021

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of particles in a substance.

Front

How does thermal energy transfer?

Back

Thermal energy transfers from hot to cold objects until thermal equilibrium is reached.

Front

What is the energy transformation in a circuit with a battery and a light bulb?

Back

The energy transformation is chemical energy (from the battery) → electrical energy (through the wires) → light energy (in the bulb).

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically related to its height.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as 1/2 mv², where m is mass and v is velocity.

Front

What units are used to measure mass?

Back

Mass is typically measured in kilograms (kg).

Front

What units are used to measure speed?

Back

Speed is typically measured in meters per second (m/s).

Front

What is the formula for squaring a number?

Back

To square a number, multiply the base by itself (e.g., x² = x * x).

Front

What is the difference between potential and kinetic energy?

Back

Potential energy is stored energy based on position, while kinetic energy is energy of motion.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.