When traveling north from the United States into Canada, you'll see the North Star (Polaris) getting
A) brighter.
B) dimmer.
C) higher in the sky.
D) lower in the sky.
C
You might also like to view...
A popular swinging-balls apparatus (Newton's cradle) consists of a series of identical elastic balls suspended by strings so they barely touch each other
When two balls are pulled away from one end and released, they strike the row of balls and two balls pop out from the other end. If instead, one ball popped out with twice the speed, this would violate the conservation of A) momentum. B) energy. C) both of these D) none of the above
A prism has a vertex angle of 60° and an index of refraction of 1.52. What is the minimum angle of incidence, measured away from the vertex, for a ray of light to emerge from the other side of the prism?
A) 25.6° B) 38.7° C) 29.4° D) 32.1° E) 33.3°
Which two elements are most likely to combine with one another to form an ionic compound?
a. B and Cl b. Ra and Br c. Mg and Ca d. S and O
The changing shapes of constellations in the night sky is caused by
A) the rotation of our planet about its axis. B) the revolution of our planet around the Sun. C) the movement of our planet within the Milky Way. D) the tilt of Earth's axis.