Science Physics Topics Flashcards

Why does a metal spoon feel colder than a wooden spoon at the same temperature?

Answer: Metal conducts heat away from your hand faster

Metal is a good conductor of heat, so it transfers heat away from your hand quickly, making it feel cold. Wood is a poor conductor.

What is the function of a fuse in an electrical circuit?

Answer: To protect the circuit from excessive current

A fuse is a safety device that melts and breaks the circuit if the current exceeds a safe level, preventing damage or fire.

Which of the following statements about magnets is TRUE?

Answer: Every magnet has a north and south pole

Every magnet has two poles: north and south. Like poles repel, unlike poles attract.

What form of energy does a stretched rubber band have?

Answer: Elastic potential energy

A stretched rubber band stores elastic potential energy. When released, this energy converts to kinetic energy as it snaps back.

How does heat travel through a vacuum (like space)?

Answer: Radiation

Radiation is the only method of heat transfer that does not require a medium. This is how the Sun's heat reaches Earth through space.

What is the relationship between the mass of an object and the gravitational force acting on it?

Answer: Greater mass means greater gravitational force

The gravitational force (weight) increases with mass. A heavier object experiences a greater gravitational pull.