Rotation & Revolution
True or False:
earth's rotation and revolution are both causes of seasons
TRUE!
Rotation = hours of daylight (due to tilt)
Revolution = trip around the sun and causes which hemisphere is facing to or away
Where is the sun at noon?
Straight up at the highest point in its "path"
Earth rotates in which direction?
Left.
Counterclockwise.
To the West.
What would happen if the Earth had no tilt?
No seasons (change in temperatures in specific place). Same number of daylight hours throughout the year.
How many hours of sunlight will we have on December 21st?
9 hours (3 minutes)
Which 2 locations can receive 24 hours of daylight or 24 hours of darkness?
North and South Pole
The suns rays are most intense in what direction/motion?
direct, straight narrow path
What is the tilt of Earth's axis?
Does it ever change?
23.5 degrees
NO
Draw a model of the southern hemisphere in winter.
the south side of the earth should be pointed away from the sun
Name 3 zodiac constellations
Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpius, Sagittarius, Capricornus, Aquarius and Pisces.
Which location receives equal amounts of daylight and nighttime on a yearly basis?
the equator
True or false. We will only see stars that are in the opposite direction of the sun.
If it's false, correct it.
TRUE!
*think of the zodiacs
What is the difference between the Earth's rotation and revolution?
Rotation = 24 hour, day & night
Revolution = one year, around the sun
State what is special about our summer solstice AND when is it?
Summer Solstice - June 21
longest day of the year
The Bid Dipper always can be seen in the Northern Hemisphere. Therefore we use it as our "north star".
What is the name the north star?
Polaris
Describe the "path" of the sun in winter.
The sun is low in the sky, because its low it takes less time. Less daylight hours cause colder (winter) temps
Draw 2 people. Lable one "equator" and one "Michigan".
Draw the direction they would be pointing if they were pointing at the sun.
Equator man: straight up
Michigander: In-between straight up and sraight out, at an angle.
Which of the following are affected by Earth's tilt?
A. the number of daylight hours
B. how long seasons last
C. changes in yearly temperatures
D. what stars we see in the sky at night
A.
C.
D.
What does equinox actually mean?
"equal night" - same number of daylight and night hours (12 and 12 = 24)
What year was the last total SOLAR eclipse visible from Michigan?
*for triple points (800) what year will the next one be?!
April 2024
2099
Because the sun stays low in the sky (due to the tilt). These locations receive sunlight at an angle and make the heat less intense. The sun also has to travel through more atmosphere at the poles
What is the Latin name for the Big Dipper? Meaning "great bear"
Ursa Major
Which month in Earth's orbit is it closest to the sun?
January
Briefly state the 2 reasons for seasons.
**on your test describe in detail the reason for seasons
The angle of the sun's rays
The amount of daylight (temperature changes)
How many main time zones do we have in the US?
AND name the one Michigan is in.
4 (Eastern***, Pacific, Mountain, Central)