In a photo like the Hubble Deep Field (Figure 16.1 in your textbook), we see galaxies in many different stages of their lives. In general, which galaxies are seen in the earliest (youngest) stages of their lives?
A) the galaxies that have the most hot, young O and B stars
B) the galaxies that are the reddest in color
C) the galaxies that are farthest away
D) the galaxies that are nearest to us
C
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The strength of the Coriolis effect depends on
A) a planet's distance from the Sun. B) the amount of greenhouse gases in the atmosphere. C) a planet's size and rotation rate. D) a planet's temperature. E) the tilt of a planet's axis.
The region controlled by Earth's magnetic field is the _______________
Fill in the blank(s) with correct word
The mass number is equal to the number of what particles in the nucleus?
A) protons B) neutrons C) nucleons D) electrons E) positrons.
Ohm's Law: If a quantity you calculated has units of ? ? m what is that quantity?
A. potential B. resistivity C. resistance D. capacitance E. charge