Astronomy

Front

What is the Foucault pendulum and how does it demonstrate Earth's rotation?

Back

The Foucault pendulum is a device that demonstrates the rotation of the Earth by swinging in a constant direction while the Earth rotates beneath it. This effect shows the rotation of the Earth on its axis.

Front

What is the Coriolis effect?

Back

The Coriolis effect is the apparent deflection of moving objects (like air and water) caused by the rotation of the Earth. It causes winds and ocean currents to curve rather than move in a straight line.

Front

What evidence supports the theory that the universe is expanding?

Back

The redshift of light from distant galaxies indicates that they are moving away from us, which supports the theory of an expanding universe.

Front

What is perihelion and aphelion in relation to Earth's orbit?

Back

Perihelion is the point in Earth's orbit where it is closest to the Sun, while aphelion is the point where it is farthest from the Sun.

Front

What is the significance of Polaris in astronomy?

Back

Polaris, also known as the North Star, is significant because it is located nearly directly above the North Pole, making it a reliable indicator of true north.

Front

What are Jovian planets?

Back

Jovian planets, also known as gas giants, are the large planets in our solar system, including Jupiter, Saturn, Uranus, and Neptune, characterized by their thick atmospheres and low densities.

Front

What are the common characteristics of Jovian planets?

Back

All Jovian planets have large diameters and low densities compared to terrestrial planets.

Front

How does the rotation period of Jupiter compare to that of Earth?

Back

Jupiter has a much shorter rotation period than Earth, completing a rotation in about 10 hours.

Front

What is the role of light wavelengths in determining the movement of galaxies?

Back

The shift in light wavelengths (redshift) from distant galaxies indicates their movement away from Earth, supporting the expanding universe theory.

Front

What is the relationship between the Earth's axial tilt and seasons?

Back

The tilt of Earth's axis (about 23.5 degrees) causes different parts of the Earth to receive varying amounts of sunlight throughout the year, resulting in the seasons.