Sun's Rotation and Composition

The video explains that the sun rotates on its axis approximately every 27 days, a discovery made by Galileo Galilei through observing sunspots. Unlike Earth, the sun's rotation is complex due to its gaseous and plasma composition, leading to differential rotation where different parts of the sun rotate at varying speeds. The equator rotates faster than the poles, and this concept is also observed in other planets like Jupiter and Saturn. The video concludes with practice questions to reinforce learning.

How long does it take for the Sun to complete one rotation on its axis?

• About 35 days

• About 27 days

• About 30 days

• About 24 days

Who discovered that the Sun rotates?

• Galileo Galilei

• Albert Einstein

• Nicolaus Copernicus

• Isaac Newton

Which rotates faster?

• Both rotate at the same speed

• The Earth

• The Sun

• Neither rotates

What is the primary composition of the Sun?

• Carbon and Oxygen

• Hydrogen and Helium

• Oxygen and Nitrogen

• Iron and Nickel

How does the Sun's equator rotation period compare to its polar regions?

• Polar regions rotate faster

• Equator rotates faster

• Neither rotates

• Both rotate at the same speed

What is the term used to describe the Sun's rotation at different speeds in different parts?

• Asynchronous rotation

• Uniform rotation

• Differential rotation

• Synchronous rotation

Which planets also exhibit differential rotation similar to the Sun?

• Mars and Earth

• Pluto and Eris

• Mercury and Venus

• Jupiter and Saturn

How long does it take for the Sun's equator to complete one rotation?

• About 35 days

• About 30 days

• About 27 days

• About 24 days

Which part of the Sun has a faster rotation?

• The Sun's core

• The Sun's equator

• The Sun's poles

• The Sun's corona

Do the gas giants Jupiter and Saturn have different rotation periods compared to the ice giants Uranus and Neptune?

• Yes

• No

• Only Jupiter has a different rotation

• Only Saturn has a different rotation