What are the relative ages of the heavily cratered Southern highlands and the smooth Northern plains of Mars?
A) the highlands and the plains are the same age
B) it is impossible to tell unless we know the specific geological processes that occurred in each hemisphere
C) the plains are older than the highlands
D) the highlands are older than the plains
D
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Light takes about 8 minutes to travel from the Sun to Earth and about 40 minutes to travel from the Sun to Jupiter. Jupiter is about ____________________ AU from the Sun
Fill in the blank(s) with correct word
A radiation detector measures radioactivity decay of a piece of radium by catching and counting alpha particles it emits. Making this measurement affects the
A) radiation rate of the piece of radium. B) alpha particles that are caught and counted. C) both of these D) neither of these
A _____ is a telescope designed to capture images of faint objects such as the corona of the Sun that are near relatively bright objects
A) compound telescope B) coronagraph C) corona loop D) filler telescope
Predicting an eclipse is easy because all you have to do is keep track of where the Moon crosses the ecliptic
a. True b. False Indicate whether the statement is true or false