The third brightest object in the sky is
a. the Sun.
b. the Moon.
c. Venus.
d. Mars.
c
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You lay on your back and watch the stars for an entire night. You focus on one star and notice that it does not rise or set, nor does it trace circles in the sky. What is your latitude on Earth? Which star would be at your zenith if you stood up? Which significant feature of the celestial sphere lies along your horizon?
What will be an ideal response?
We determine the structure of the Earth's core using:
A) deep mine shafts. B) satellite imaging. C) radar and sonar. D) seismic wave data. E) magnetic resonance imaging.
Process of Science: Your friend hypothesizes that the phases of the Moon are produced by Earth's shadow being cast on the Moon's surface. Devise an experiment to prove your friend wrong
Describe an observation you will make (time of day/night, location in sky) and describe what you will see that will clearly demonstrate that your friend's idea cannot be correct.
In a physics demonstration, two rubber balls are dropped down a tube towards the ground, with the lighter ball behind, and not quite in contact with, the heavier ball
The heavier ball collides with the ground and bounces, then collides with the still descending lighter ball. Assume that all the collisions are elastic. In one such demonstration, the heavier ball has a mass of 500 grams, the lighter one a mass of 100 grams, and they are released 1.00 m above the ground. How high does the lighter ball rise after the two collisions? A) 5.44 m B) 10.3 m C) 2.95 m D) 5.89 m E) 1.00 m