The angle or arc distance of a point on the celestial sphere from the zenith is called the ______________ angle
Fill in the blank(s) with correct word
zenith
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What is the wavelength of the most intense light emitted by a giant star of surface temperature 5000 K? The constant in Wien's law is 0.00290 m ? K
A) 582 nm B) 580 nm C) 576 nm D) 578 nm
Why is Saturn oblate?
a. The gravity of its moons flattens the planet. b. The rapid rotation of the planet flattens it. c. It formed that way originally and has no way to reshape itself. d. The magnetic fields of Jupiter and Saturn interact and cause the planet to flatten.
Light passes readily through a pair of Polaroids when their axes are
1) parallel. 2) perpendicular. 3) neither of these, and for a pair of Polaroids with axes at 45 degrees to each other 4) light will not pass. 5) light that passes is dimmer than for parallel Polaroids. 6) another Polaroid is necessary for any light to pass.
Why was it advantageous for the Voyager missions to consist of flybys rather than orbiters?
A) Each individual spacecraft was able to visit more than one planet. B) Spacecraft making flybys can return to Earth more quickly than orbiters. C) It was easier for data to be radioed back to Earth with flybys than orbiters. D) Flyby spacecraft can get closer to a planet than an orbiting spacecraft.