What type of galaxy has a mix of young and old stars, an abundant amount of gas and dust, ongoing star formation, and a definitive shapes?
A. irregular galaxies
B. elliptical galaxies
C. spiral galaxies
D. All types of galaxies share these features.
Answer: C
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What are the properties of Pyroclastic Flow?
a. Felsic and intermediate magmas b. Consists of ash, pumice, and debris c. Materials ejected at high velocities d. All of the above e. Both a and b
Which is not a primary reaction of chemical weathering?
A) oxidation B) exfoliation C) dissolution D) hydrolysis
The first step in producing a timely warning of a tsunami is
A) detection of a possible tsunami-producing earthquake B) detection of a tsunami using a tsunameter C) closely watching tidal gauges D) calculation of ocean travel times
The Sun is a star in the ________ galaxy
A) Orion B) Milky Way C) Proxima Centauri D) Alpha Centauri E) Betelgeuse