Suppose you see a photo showing Jupiter half in sunlight and half in shadow (that is, a first quarter Jupiter). This photo might have been taken by ________.
A) the Arecibo radio telescope in Puerto Rico
B) the Galileo spacecraft that orbited Jupiter in the 1990s
C) the Keck telescope on Mauna Kea, Hawaii
D) the Hubble Space Telescope (which orbits Earth)
Question 2
You measure the parallax angle for a star to be 0.5 arcseconds. The distance to this star is
A) 0.5 light-year.
B) 2 parsecs.
C) 5 light-years.
D) 0.5 parsec.
E) 5 parsecs.
Measles. A photograph of a child stricken with measles, showing the tell-tale sign of the skin rash.
To cleanse an open wound, begin close to the wound and work outward in full or half circles.
Six-week embryo showing development of hand and foot plates
A phylogenetic tree showing the evolutionary relationships among hominoids. The evidence shows that