Kinetic energy is proportional to speed
Indicate whether the statement is true or false
FALSE
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The visual pink glow of the Great Nebula in Orion
a. is a Herbig-Haro object. b. is a reflection nebula of dust. c. is an emission nebula of thin gas. d. contains only young low mass stars. e. is believed to be about 5 billion years old.
Galileo's observations of a complete set of phases of Venus proved
a. that Venus orbited the Sun. b. that Earth orbited the Sun. c. that all of the planets orbited the Sun. d. that the Moon orbited Earth. e. that Venus had an atmosphere.
In what form does water exist on the Moon?
A) There is water ice in craters near the poles. B) There are small pools of liquid water just beneath the surface. C) There are shallow lakes of liquid water in the deepest craters. D) There is water ice in the bright regions of the lunar maria. E) There is no water in any form on the Moon. Answer: A
On average, elliptical galaxies are much older than large spiral galaxies
Indicate whether the statement is true or false