Terrestrial planets

The video explains the composition of the inner planets in our solar system, highlighting their silicate rock makeup and central metallic cores. It also discusses the discovery of exoplanets, noting that gas giants are more easily detected, but since the 1990s, astronomers have identified additional rocky planets.

What is the primary composition of the solar system?

• Gaseous clouds

• Ice particles

• Silicate rocks

• Metallic elements

What is a common feature of the innermost planets in our solar system?

• They are made entirely of ice

• They have a gaseous surface

• They have a central metallic core

• They have no atmosphere

Why are gas giants the most commonly detected planets around other stars?

• They emit their own light

• They are larger and easier to detect

• They are the closest to Earth

• They have unique colors

When did astronomers start identifying additional rocky planets?

• In the 1970s

• In the 2000s

• In the early 1990s

• In the 1980s

What type of planets have astronomers started to identify since the early 1990s?

• Ice giants

• Dwarf planets

• Gas giants

• Rocky planets