Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
What is a galaxy? What is ours called?
|
stars that are grouped together, the milky way
|
|
|
What are tides
|
the response of the fluid ocean surface to the gravitational pull of the moon and sun
|
|
|
What is a rotation?
|
One complete spin of earth on its axis
|
|
|
How long does one of Earths rotations take? What is created because of it?
|
24 hours, it creates day and night
|
|
|
What is a revolution? How long does it take?
|
One elliptical orbit around the sun, takes 365 1/4 days
|
|
|
Why do we have a leap year?
|
to account for the 1/4 day earned each year
|
|
|
Towads what does the North Pole point? What does the Earths tilt affect?
|
-The North Star
-affects the amount of solar energy that different places receive during the year |
|
|
What are the tropics?
|
Warm low- latitude areas near the equator (lots of solar energy)
|
|
|
What are the polar regions?
|
high latitudes, cold most of the time (little solar energy)
|
|
|
Which latitudes receive the most solar energy throughout the year?
|
Tropics or the low latitudes
|
|
|
How does the tilt of the Earths axis affect the seasons?
|
it causes seasons to change
|
|
|
What is a solstice?
|
the time that the earths poles point at their greatest angle toward or away from the sun
|
|
|
When does a solstice occur?
|
June 21 and December 21
|
|
|
What is the Tropic of Capricorn?
|
-tropic of capricorn=23 1/2 degrees south of the equator
|
|
|
What is the Antarctic Circle?
|
Antarctic Circle=66 1/2 degrees North of the Equator
|
|
|
What is the Arctic Circle?
|
Arctic Circle= 6 1/2 degrees north of the equator
|
|
|
What is the Tropic of Cancer?
|
Tropic of Cancer= 23 1/2 degrees north of the equator
|
|
|
What is an equinox? When do they occur?
|
the time when the Earths poles are not pointed toward or away from the sun
|
|
|
one of the four parts of the earth system is the Atmosphere, what does that part refer to?
|
the gasses surrounding the Earth
|
|
|
one of the four parts of the earth system is the Lithosphere, what does that part refer to?
|
Earths solid crust
|
|
|
one of the four parts of the earth system is the Hydrosphere, what does that part refer to?
|
all of Earths water
|
|
|
one of the four parts of the earth system is the biosphere, what does that part refer to?
|
all lifeforms on earth
|
