18 Questions
What is the primary factor that determined the composition of objects in the protoplanetary disk?
Distance from the Sun
What role did solar wind play in the formation of the solar system?
It drove lighter molecules toward the outer part of the protoplanetary disk
What is the primary mechanism by which objects in the early solar system grew in size?
Accretion
Which of the following is a characteristic of terrestrial planets?
They have rocky mantles and metal cores
What is the purpose of static electricity in the early solar system?
To collect particles into fluffy clumps
What is the primary difference between Jovian and ice giant planets?
Their composition
What is the primary reason why near infrared light is used to view stars that would otherwise be hidden by dust?
To capture the heat from the stars
What is the role of static electricity in the early stages of planetary formation?
It helps accumulate dust particles into loose clumps
What is the term for the disk that forms around a star during the planetary formation process?
Protoplanetary disk
What do the dark rings in the protoplanetary disk represent?
Gaps where planets are forming
What is the process by which small particles come together to form larger bodies in the solar system?
Accretion
What is the primary component of the material that forms the protoplanetary disk?
Dust particles
What is the primary reason for the presence of dark rings in a protoplanetary disk?
Incipient planets are collecting dust and gas in their orbits
What is the analogy in our own solar system for the dark rings in a protoplanetary disk?
Gaps in the rings of Saturn
What is the primary composition of Jovian planets?
Hydrogen and helium
What is the classification of planets like Earth, Mercury, Venus, and Mars based on their composition?
Terrestrial planets
What is the purpose of illustrating the protoplanetary disk surrounding HL Tauri?
To compare with the rings of Saturn
What is the analogous phenomenon to the aurora shown in Figure 22.3.3 (lower left)?
Northern lights on Earth
The process of star formation is influenced by gravitational force, which pulls gas molecules and dust particles together. Initially, the particles are small, making the gravitational force between them weak. Discover how dust accumulation leads to the formation of stars and galaxies.
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