Review - WARMUP

Front

What does a motion graph indicate when an object moves at a constant speed and then stops?

Back

The object moved at a constant speed, then stopped. After stopping, it returned to the beginning and then moved back in the original direction at a very fast constant speed.

Front

How do you calculate the average speed of an object?

Back

Average Speed = Total Distance / Total Time

Front

In which direction does thermal energy always move?

Back

From a high temperature object to a lower temperature object.

Front

What type of heat transfer occurs when cooler air sinks and hotter air rises, such as in a building fire?

Back

Convection

Front

Describe the movement of thermal energy by conduction when a warm pot of soup is placed in the refrigerator.

Back

Thermal energy moves from the soup to the pot to the air.

Front

What is the definition of average speed?

Back

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

Front

What is the principle behind convection in heat transfer?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) where warmer, less dense areas rise and cooler, denser areas sink.

Front

What happens to thermal energy when two objects at different temperatures come into contact?

Back

Thermal energy will flow from the hotter object to the cooler object until thermal equilibrium is reached.

Front

What is conduction in the context of heat transfer?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter part to the cooler part.

Front

What is the significance of a motion graph in understanding an object's speed?

Back

A motion graph visually represents an object's speed and direction over time, helping to analyze its motion.