Galaxies
What is the name of the galaxy that contains our solar system?
What is the Milky Way galaxy?
What is a luminous globe of gas that produces its own heat and light?
What is a star?
What scientific theory explains the early development of the universe?
What is the Big Bang theory?
What does the H-R diagram show the relationship between?
What are brightness, surface temperature, and color of stars?
What is the range of all types of electromagnetic radiation?
What is the electromagnetic spectrum?
What are the three main types of galaxies?
What are spiral, elliptical, and irregular galaxies?
What is the main sequence star that is closest to Earth?
What is the Sun?
What is the electromagnetic radiation that remains from the Big Bang?
What is cosmic microwave background?
What type of stars are found in the upper right of the H-R diagram?
What are red giants?
Which wavelength is associated with the highest energy?
What are gamma rays?
What is the term for a system of stars and associated matter held together by gravitational attraction?
What is a galaxy?
What are the stages of a star's life cycle?
What are nebula, protostar, main sequence, red giant, and white dwarf?
What is a region in space where gravity is so strong that nothing can escape?
What is a black hole?
How can you predict a star's life cycle using the H-R diagram?
By comparing its mass, luminosity, and temperature.
How do astronomers use infrared waves?
To study cooler objects in space, like nebulae and distant galaxies.
How do scientists classify galaxies?
How do they classify galaxies by shape?
What term refers to the total amount of light emitted by a star?
What is luminosity?
What do scientists use to gain information about the components of the universe?
What is the electromagnetic spectrum?
What is the importance of the main sequence on the H-R diagram?
It shows where most stars, including our Sun, are located during their life cycle.
What type of radiation can be used to study the heat emitted by stars?
What is infrared radiation?
What phenomenon is observed when galaxies are moving away from each other?
What is red-shift?
How are stars classified based on temperature and brightness?
What is the Hertzsprung-Russell diagram?
What is the term for the observable universe expanding over time?
What is the theory of cosmic expansion?
What kind of data would you gather to classify an unknown star using the H-R diagram?
Information about its brightness, temperature, and spectral class.
How does the electromagnetic spectrum support theories of the origin of the universe?
By providing evidence through observations of cosmic microwave background and red-shift.