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ssa exam one questions well answeredalready passed
What are the different types of motion that the Earth experiences? - correct answer ✔✔1. The Earth
rotates about its axis. Rotation is a movement of an object in circular motion about an axis
2. Revolution - orbital motion around the Sun
Why do objects in the sky appear to rise in the east and set in the west? - correct answer ✔✔Objects in
the sky appear to rise in the east and set in the west because Earth rotates from west to east. Due to
this, we, on the Earth's surface, see objects in the sky moving from east to west
How does the location of stars appear to change over the course of a year? - correct answer ✔✔The
locations of stars appear to change over the course of a year. As the Earth rotates from west to east, the
stars appear to rise in the East and then move across the sky to set in the West. The sun will appear to
move through the stars, making one complete circuit of the sky in 365 days
Why is Polaris important to navigators? - correct answer ✔✔It sits directly over the North Pole and
wherever you are in the northern hemisphere, the North Star will be the same angle above the horizon
as your latitude and stars
How do the North and South Celestial Poles change over time? - correct answer ✔✔When facing North -
stars will appear to move counter-clockwise around Polaris, the North Star
When facing South - stars will appear to move clockwise around the South Celestial Pole (which is below
the horizon and therefore not viewable)
What is the main cause of seasons on Earth? - correct answer ✔✔The tilt of Earth on its axis ; As Earth
orbits the Sun, its axis continues to point in the same direction relative to background stars, but changes
relative to the Sun
What do we mean when we say that Earth is tilted? - correct answer ✔✔As Earth revolves around the
Sun it is tilted on its invisible axis, which means that the northern hemisphere is sometimes tilted toward
the Sun, and sometimes it is tilted away resulting in the seasons we experience
, How does the tilt of the Earth's axis affect the length of daylight over the course of a year? - correct
answer ✔✔We experience longer days during Summer, and shorter days during Winter. The directness
of the Sun's rays vary over the year
How does the tilt affect the rise and set positions of the Sun over the course of a year? - correct answer
✔✔When the Sun is north of the celestial equator, it rises north of east and sets north of west
When the Sun is south of the celestial equator, it rises south of east and sets south of west
How does the tilt affect the height of the Sun at noon? - correct answer ✔✔The altitude of the Sun
varies from very high in the sky (when the northern hemisphere is pointed towards the Sun) to rather
low in the sky (when the southern hemisphere is pointed towards the Sun). The Sun isn't exactly on the
meridian at noon either, it may be slightly east or west of this position
Is the Sun ever directly overhead at noon? - correct answer ✔✔When the Sun is on the celestial equator
it rises exactly due east and sets exactly due west, this happens twice a year on the Equinoxes
What is the difference between more direct rays and less direct rays? - correct answer ✔✔More direct
rays - shone straight down, small patch illuminated, receives more energy
Less direct rays - shone at an angle, illuminates a bigger patch of ground, receives less energy
How does the directness of the Sun's rays affect the seasons? - correct answer ✔✔Earth when the
northern hemisphere is pointing towards the Sun ;
More direct rays are hitting the northern hemisphere resulting in northern summers
Less direct rays are hitting the southern hemisphere resulting in southern winter
Earth when the northern hemisphere is pointing away from the Sun ;
Less direct rays are hitting the northern hemispheres resulting in northern winters
More direct rays are hitting the southern hemisphere resulting in southern summers
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