LS PMA review 2

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer, less dense air rises and cooler, denser air sinks.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is a land breeze?

Back

A land breeze is a local wind that blows from land to sea, typically occurring at night when the land cools faster than the water.

Front

What is a sea breeze?

Back

A sea breeze is a local wind that blows from the sea to land, usually occurring during the day when the land heats up faster than the water.

Front

What does a speed graph show?

Back

A speed graph shows how fast an object is moving over time, typically represented with distance on the y-axis and time on the x-axis.

Front

Why do we wear white shirts on hot days?

Back

We wear white shirts on hot days because white reflects sunlight, helping to keep us cool.

Front

What is conduction?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, such as sunlight warming the Earth.

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 the first law of motion?

Back

The first law of motion, also known as Newton's first law, states that an object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an external force.