Vocab 1
A system of organizing time that defines the beginning, length, and divisions of a year.
What is a calendar?
A body that orbits a planet.
What is a satellite?
What is 365.25 days?
Seasons are the results of earth's _____ ____.
What is tilted axis?
____ percent of the earth is covered in water.
What is 70?
The imaginary line that passes through earth's center and the North and South poles is earth's ____.
What is the earth's axis?
Double Points
When the sun appears farthest north of the equator once each year and farthest south once each year.
What is a solstice?
Every four years, 29 days are in February instead of 28 due to earth's duration of orbit being 365.25 days.
What is a leap year?
When is the Vernal Equinox?
Earth's name comes from the old English word ____
what is "ertha?"
The spinning of earth on it's axis
What is rotation?
An object that orbits the sun, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit.
What is a planet?
Double Points
The tilt of earth's axis
What is 23.5 degrees?
June 21st
When is the Summer Solstice?
Earth was once believed to be the center of _____.
What is the universe?
A pattern or group of stars that people imagined to represent a figure, animal or object.
What is a constellation?
A giant ball of hot gas, mainly composed of hydrogen and helium.
What is a star?
The star that earth's axis points to, otherwise known as the "North Star"
What is Polaris?
December 21st
When is the Winter Solstice?
-=x10 Points=-
Earth is geologically active and has processes like tectonics and erosion that reshape its surface.
Why does earth have very few impact craters?
When neither hemisphere is tilted toward the sun or away from the sun, and daylight hours are the same.
What is an equinox?
Two Questions:
1. A streak of light produced when a small object burns up upon entering earth's atmosphere.
2. A cold mixture of ice and dust that gives up a long trail of light as it approaches the sun.
1. What is a meteor?
2. What is a comet?
Double Points
The direction that earth rotates
What is east?
When is the Autumnal Equinox?
5,972,190,000,000,000 billion kg
what is the mass of earth?