Prep for 1st Semester Physics Final

Front

What is nuclear fusion?

Back

A process where two light atomic nuclei combine to form a heavier nucleus, releasing energy. It occurs naturally in stars, including the sun.

Front

What is one product of nuclear fusion in the sun?

Back

Helium.

Front

Define weight in physics.

Back

Weight is the measure of the force exerted on an object due to gravity.

Front

What causes weightlessness?

Back

Weightlessness is due to a balance of forces acting on an object, often experienced in free-fall.

Front

What role do charged particles play in cellular processes?

Back

Charged particles are responsible for much of the cellular movement in the world.

Front

What is the main difference between fusion and fission?

Back

Fusion combines light nuclei to form a heavier nucleus, while fission splits heavy nuclei into lighter nuclei.

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses, proportional to their masses and inversely proportional to the square of the distance between their centers.

Front

Explain the concept of energy conservation in physics.

Back

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

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, such as gravitational potential energy.