Wrap-Up TEST B

Front

What is the difference between average speed and average velocity?

Back

Average speed is the total distance traveled divided by the total time taken, and is always greater than zero. Average velocity is the total displacement divided by the total time taken, and can be zero if the starting and ending points are the same.

Front

What are convection currents in the Earth's mantle?

Back

Convection currents are movements of material within the Earth's mantle caused by the heating from the Earth's core, which creates a cycle of rising and sinking material.

Front

How is temperature related to the kinetic energy of molecules?

Back

Temperature is a measure of the average kinetic energy of the molecules in a substance; as temperature increases, the kinetic energy of the molecules also increases.

Front

What is thermal energy transfer by radiation?

Back

Radiation is the transfer of thermal energy through space without the need for a medium, unlike conduction and convection which require contact or a fluid.

Front

Under what condition do two people have the same speed and velocity?

Back

Two people have the same speed and velocity if they are jogging side by side at the same speed.

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken.

Front

What is average velocity?

Back

Average velocity is the total displacement divided by the total time taken.

Front

What is displacement?

Back

Displacement is the shortest distance from the initial to the final position of an object, along with the direction.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between particles in a solid.

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids and gases) due to differences in density.