2nd 9 weeks review

Front

What do molecules in a liquid look like?

Back

Molecules in a liquid are closely packed but can move around each other, allowing liquids to flow and take the shape of their container.

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken. For example, if a runner covers 100 meters in 10 seconds, her average speed is 10 m/s.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is radiation?

Back

Radiation is energy that comes in the form of wavelengths, such as light, and can travel through space.

Front

How does heat transfer occur when touching a cold surface?

Back

Heat moves from the warmer object (the hand) to the colder object (the window), resulting in the hand feeling cold.

Front

What is a scalar quantity?

Back

A scalar quantity is a physical quantity that has only magnitude and no direction, such as speed or temperature.

Front

What is a vector quantity?

Back

A vector quantity is a physical quantity that has both magnitude and direction, such as velocity or force.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the significance of direction in velocity?

Back

Direction is crucial in velocity because it indicates where the object is moving, making it different from speed.

Front

What happens to the molecules in a solid when heated?

Back

When heated, the molecules in a solid gain energy and vibrate more, which can eventually lead to a change in state, such as melting.