Suppose you live on the Moon. How long is a day (i.e., from sunrise to sunrise)?
A) 23 hours 56 minutes
B) 24 hours
C) a lunar month
D) a year
E) about 18 years
C
You might also like to view...
Microscopic slush in water tends to make the water
A) more dense. B) less dense. C) slipperier. D) warmer.
Why do we believe 90 percent of the mass of the Milky Way is in the form of dark matter?
A) The orbital speeds of stars far from the galactic center are surprisingly high, suggesting that these stars are feeling gravitational effects from unseen matter in the halo. B) Although dark matter emits no visible light, it can be seen with radio wavelengths, and such observations confirm that the halo is full of this material. C) Theoretical models of galaxy formation suggest that a galaxy cannot form unless it has at least 10 times as much matter as we see in the Milky Way disk, suggesting that the halo is full of dark matter. D) Our view of distant galaxies is sometimes obscured by dark blotches in the sky, and we believe these blotches are dark matter located in the halo.
Michael is going to the store 6 miles away. He rides his bike at 12 mph for the first half of the trip, then walks at 4 mph for the remainder
Michael's average speed for the trip to the store is closest to:
1.2 mph 2.4 mph 3.6 mph 4.8 mph 5.10 mph 6.12 mph 7.14 mph 8.exactly halfway between two of the values above 9.impossible to determineIntelligence may be subject to convergent evolution because it
A) is inevitable B) is a fundamental characteristic of life C) has survival value D) is required for survival