Physical Science Final S1

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How do you calculate the height needed to increase gravitational potential energy?

Back

To find the height (h) needed to increase gravitational potential energy (PE), use the formula h = PE / (mg), where m is mass and g is the acceleration due to gravity.

Front

What is the fastest method of thermal energy transfer through a vacuum?

Back

The fastest method of thermal energy transfer through a vacuum is radiation.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, which is related to its temperature.

Front

Which material is the best conductor of thermal energy?

Back

Copper is the best conductor of thermal energy among common materials.

Front

How does the amount of thermal energy relate to the volume of water?

Back

The amount of thermal energy increases with the volume of water at the same temperature; for example, two liters of water at 50°C has more thermal energy than one liter at the same temperature.

Front

What is average speed?

Back

Average speed is defined as the total distance traveled divided by the total time taken, calculated as Average Speed = Total Distance / Total Time.

Front

What is the formula for calculating gravitational potential energy?

Back

The formula for calculating gravitational potential energy is PE = mgh, where PE is potential energy, m is mass, g is the acceleration due to gravity, and h is height.