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Questions and Answers
What is described as a hypothesized form of energy responsible for the universe’s increasing rate of expansion?
What is described as a hypothesized form of energy responsible for the universe’s increasing rate of expansion?
- Cosmic Radiation
- Gravity
- Dark Energy (correct)
- Dark Matter
Which process marks the first stage a star undergoes after forming from a nebula?
Which process marks the first stage a star undergoes after forming from a nebula?
- Red Giant Phase
- Protostar (correct)
- Main Sequence
- Supernova
What is the observed increase in the wavelength of light emitted by distant galaxies called?
What is the observed increase in the wavelength of light emitted by distant galaxies called?
- Blue Shift
- Red-Shift (correct)
- Stellar Shift
- Cosmic Shift
Which type of star forms when fusion reactions in a star similar to the Sun come to an end?
Which type of star forms when fusion reactions in a star similar to the Sun come to an end?
What term describes the man-made satellites used for communication and imaging?
What term describes the man-made satellites used for communication and imaging?
Which stage in a star's life cycle is characterized by a balance between gravitational forces and outward pressure?
Which stage in a star's life cycle is characterized by a balance between gravitational forces and outward pressure?
Which of the following best describes a nebula?
Which of the following best describes a nebula?
What phenomenon occurs when massive stars explode, dispersing elements created by fusion reactions?
What phenomenon occurs when massive stars explode, dispersing elements created by fusion reactions?
Flashcards
Big Bang Theory
Big Bang Theory
The widely accepted model explaining the universe's origin as expanding from a tiny, dense point.
Main Sequence Star
Main Sequence Star
The stable phase of a star where inward gravity and outward pressure balance.
Milky Way Galaxy
Milky Way Galaxy
The galaxy containing our solar system.
Natural Satellites
Natural Satellites
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Protostar
Protostar
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Red Giant Star
Red Giant Star
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Star Life Cycle
Star Life Cycle
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Supernova
Supernova
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Study Notes
Space Physics Definitions
- Artificial Satellites: Man-made objects sent into space for tasks like imaging and communication.
- Big Bang Theory: The leading model for the universe's origin, proposing expansion from a dense, hot point.
- Circular Orbits: The paths followed by planets and satellites, maintained by gravitational force.
- Dark Energy: A hypothetical energy form driving the universe's accelerating expansion.
- Dark Mass: A hypothetical type of matter not detectable by current methods, explaining galactic rotation rates.
- Main Sequence Star: The stable phase of a star where gravitational and outward pressures balance.
- Milky Way Galaxy: The galaxy containing our solar system.
- Natural Satellites: Moons orbiting planets.
- Nebula: A cloud of gas and dust, a potential birthplace of stars.
- Protostar: The early stage of a star's formation, where hydrogen nuclei start to fuse.
- Red Giant Star: A star like our Sun that expands after hydrogen fusion ends.
Stellar Processes
- Red-Shift: The increase in wavelength of light from distant galaxies, indicating their recession.
- Star Life Cycle: The stages a star goes through in its lifetime, determined by its mass relative to the Sun.
- Sun: A star formed from gas and dust, driven by nuclear fusion reactions.
- Supernova: The explosive demise of a massive star, dispersing elements created in the star's core.
- White Dwarf: The dense, cool remnant of a star like our Sun after the fusion phase ends.
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