CFA 7B

Front

What is a New Moon?

Back

A New Moon is a phase of the Moon when it is not visible from Earth because it is positioned between the Earth and the Sun.

Front

What role does gravity play in the Solar System?

Back

Gravity is the force that keeps planets in orbit around the Sun, preventing them from floating off into space.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It keeps planets moving in their orbits.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the Sun, displays a visible atmosphere or coma and sometimes a tail.

Front

What is the Big Bang?

Back

The Big Bang is the leading explanation for the origin of the universe, describing how it expanded from a very high-density and high-temperature state.

Front

What is the order of formation of the universe?

Back

The correct order is: Big Bang, Universe, Galaxy, Solar System.

Front

What is the difference between a meteoroid, asteroid, and comet?

Back

A meteoroid is a small rocky or metallic body in outer space, an asteroid is a larger rocky body, and a comet contains ice and dust.

Front

What is the significance of the Sun in the Solar System?

Back

The Sun is the largest object in the Solar System and provides the gravitational force that keeps planets in orbit.

Front

What is density?

Back

Density is the mass of an object divided by its volume, indicating how much matter is packed into a given space.

Front

How does Earth's density compare to gas giants?

Back

Earth has a higher density than each of the gas giants, which are less dense due to their gaseous composition.