Core (Earth sciences)

The video tutorial discusses larger cosmic structures such as stars, planets, and galaxies. It then focuses on the Earth's inner core, highlighting its high temperature and solid iron composition due to immense pressure. The outer core is described as having lower pressure, allowing the iron to remain in a liquid state.

Which of the following is considered a larger structure in the universe?

• A cell

• A molecule

• A mountain

• A star

What is the approximate temperature of Earth's inner core?

• 2000°C

• 1000°C

• 7000°C

• 5500°C

Why does the Earth's inner core remain solid despite its high temperature?

• Because it is made of ice

• Due to the presence of water

• Due to low temperature

• Because of the high pressure

What state is the iron in within the Earth's outer core?

• Solid

• Liquid

• Plasma

• Gas

What causes the iron in the Earth's outer core to be in a liquid state?

• Low temperature and low pressure

• High temperature and low pressure

• Low temperature and high pressure

• High temperature and high pressure