Gravity, Keplers, Circluar Motion, Astronomy Unit 2024

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, proportional to their masses and inversely proportional to the square of the distance between their centers.

Front

What is Kepler's First Law of Planetary Motion?

Back

Kepler's First Law states that planets move in elliptical orbits with the Sun at one focus.

Front

What is circular motion?

Back

Circular motion is the motion of an object that revolves around a fixed point in a circular path.

Front

What is the net force acting on an object in circular motion?

Back

The net force acting on an object in circular motion is directed towards the center of the circle, known as centripetal force.

Front

What is the emission spectrum?

Back

The emission spectrum is a spectrum of the electromagnetic radiation emitted by a source, showing the wavelengths of light emitted.

Front

What determines the life cycle of a star?

Back

The life cycle of a star is primarily determined by its mass.

Front

What happens to a massive star when it begins to cool and expand?

Back

When a massive star begins to cool and expand, it becomes a Red Supergiant.

Front

What is Newton's law of universal gravitation?

Back

Newton's law of universal gravitation states that every point mass attracts every other point mass with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them.

Front

What is the difference between a Red Giant and a Red Supergiant?

Back

A Red Giant is a star that has expanded and cooled after exhausting its hydrogen fuel, while a Red Supergiant is a more massive star that has gone through similar processes but is larger and more luminous.

Front

What is the significance of a star's color?

Back

A star's color indicates its temperature; blue stars are hotter, while red stars are cooler.