Astronomy: Question Preview (ID: 689)

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The length of an Earth day is determined by the time required for approximately one
a) Earth rotation
b) Earth revolution
c) Sun rotation
d) Sun revolution

To an observer in Buffalo, New York, the North Star, Polaris, is always located above the northern horizon at an altitude of approximately
a) 23.5В°
b) 43В°
c) 66.5В°
d) 90В°

Which planet is approximately thirty times farther from the Sun than Earth is?
a) Jupiter
b) Saturn
c) Uranus
d) Neptune

Which object is located at one foci of the elliptical orbit of Mars?
a) the Sun
b) Betelgeuse
c) Earth
d) Jupiter

What is the basic difference between ultraviolet, visible, and infrared radiation?
a) half-life
b) temperature
c) wavelength
d) wave velocity

The apparent daily path of the Sun changes with the seasons because
a) Earth's axis is tilted
b) Earth's distance from the Sun changes
c) the Sun revolves
d) the Sun rotates

Summer days in New York State are likely to be hotter than winter days because in summer
a) Earth is closer to the Sun
b) the number of sunspots increases
c) Earth’s northern axis is tilted toward the Sun
d) the Sun gives off more energy

Which observation provides the best evidence that Earth rotates?
a) The position of the planets among the stars changes during the year.
b) The location of the constellations in relationship to Polaris changes from month to month.
c) The length of the shadow cast by a flagpole at noontime changes from season to season.
d) The direction of swing of a freely swinging pendulum changes during the day.

Which planet has an orbit with an eccentricity most similar to the eccentricity of the Moon’s orbit around Earth?
a) Earth
b) Saturn
c) Pluto
d) Jupiter

A cycle of Moon phases can be seen from Earth because the
a) Moon’s distance from Earth changes at a predictable rate
b) Moon revolves around Earth
c) Moon spins on its axis
d) Moon’s axis is tilted

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