Tinora Science Fusion Unit 3

Front

Why do stars look like tiny points of light in the night sky?

Back

The stars visible at night are located very far from Earth.

Front

What term do astronomers use to describe a galaxy that has a jumbled appearance?

Back

Irregular galaxy.

Front

What is a comet often referred to as, and what is its characteristic feature?

Back

A comet is often referred to as a 'dirty snowball' and usually has a tail pointing away from the Sun.

Front

What does the letter 'W' represent in diagrams showing the movements of Earth, the Sun, and the Moon?

Back

The motion that takes about 27 days.

Front

What is the term for the action of Earth going around the Sun, and how long does it take?

Back

Revolve; it takes Earth 1 year to revolve around the Sun.

Front

What is the main difference between a spiral galaxy and an irregular galaxy?

Back

A spiral galaxy has a defined structure with arms, while an irregular galaxy lacks a distinct shape.

Front

What is the significance of the distance of stars from Earth in astronomy?

Back

The distance affects their apparent brightness and size as seen from Earth.

Front

What are the two main types of galaxies based on their shapes?

Back

Spiral galaxies and elliptical galaxies.

Front

What is the role of gravity in the movement of celestial bodies like planets and moons?

Back

Gravity is the force that keeps planets in orbit around the Sun and moons in orbit around planets.

Front

What is the difference between rotation and revolution in the context of Earth?

Back

Rotation is the spinning of Earth on its axis, while revolution is the movement of Earth around the Sun.