aks 7 Review

Front

What is kinetic energy (KE)?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = \frac{1}{2}mv^2, where m is mass and v is velocity.

Front

What is potential energy (PE)?

Back

Potential energy is the energy stored in an object due to its position or configuration, commonly associated with gravitational potential energy, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What does the law of conservation of energy state?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another, and the total energy in a closed system remains constant.

Front

How does energy transfer occur between two objects at different temperatures?

Back

Energy transfers from the hotter object to the cooler object until thermal equilibrium is reached, meaning both objects attain the same temperature.

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat energy required to raise the temperature of 1 kg of a substance by 1 degree Celsius (or 1 Kelvin).

Front

Which substance has the highest specific heat capacity: water, ice, lead, or copper?

Back

Water has the highest specific heat capacity among these substances, making it effective for temperature regulation.

Front

What happens to the temperature of a substance when it absorbs heat?

Back

When a substance absorbs heat, its temperature increases, provided it is not undergoing a phase change.

Front

What is the relationship between temperature change and specific heat?

Back

The temperature change of a substance is inversely proportional to its specific heat capacity; a substance with a lower specific heat will experience a greater temperature change when the same amount of heat is added.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state reached when two objects in contact with each other reach the same temperature and no net heat transfer occurs between them.

Front

How does the mass of a substance affect its temperature change when heat is added?

Back

The greater the mass of a substance, the smaller the temperature change for a given amount of heat added, due to its specific heat capacity.