Earth and Space Flashcards
How many planets are in our solar system?
8
How long does it take the earth to rotate on its axis?
24 hrs
How long does it take the earth to revolve around the sun?
365 1/4
The inner planets are? Name the inner planets?
small and solid. Mercury,Venus, Earth, Mars
The Outer planets are? Name the outer planets>
Large and gassy. Jupiter, Saturn,Uranus and Neptune.
Every—–year we have an extra day in February to make up for the 1/4 day that is added on each year when we revolve around the sun. This is called Leap Year. What day does it occur on?
4th February 29th
We do not feel the earth move because of?
the atmosphere
At what degrees is the earth tilted on its Axis?
23 1/2
We have——–because of the earths tilt o its axis?
Seasons
Geography is
the study of its earth and its people
What are the 5 themes of geography?
location,place,human enviroment interaction,movement and region
Name the Earths 4 layers
inner core,outer core,mantle,crust
What does the theory of plate tectonics explain?
How the continents were formed and why they move.
South America and Africa were once one gigantic landmass named?
Pangaea
When plates collide what can be formed?
Mountains.
Name a mountain range that was created when plates collided?
Himalaya
The——were formed when continental plates and oceanic plates slide underneath a thick coninental plate causing magma to erupt.
Andes
The——–of fire is located in the Pacific Ocean because so many earthquakes and volcanoes are located there.
Ring Of Fire
What is it called when water and ice, chemicals and even plants wear away rocks into smaller pieces?
weathering
———is where weathered rock is moved by water, ice or wind
Erosion
——–are the highest landforms and are huge towers of rock.
Mountain
Deep cuts in the ocean are called?
trenches
What is the deepest trench in the world? Where is it located?
Mariana Pacific ocean.
Earth is called the?
water planet
The earth is made up of——– water?
70%
How much of the earths water is fresh?
3%
most of earths water is?
frozen in the polar regions
What changes water from a liquid to a gas?
evaporation
What takes place when water changes from gas back to a liquid?
condensation
Precipitation can be?
rain sleet or hail.
Weather refers to the————at the present time.
temperature
———–is the weather over a period of years>
climate
Name 2 storms where heavy rain falls?
El Nino and La Nina
———can cause problems for interior regions because moisture and sun can not reach interior regions.
Rain Shadow
How many world climate zones are there?
five
What is acid rain?
Chemicals in air pollution combined with precipitation.
What is the greenhouse effect?
Gases in the atmosphere trap the suns warmth
Be able to give your opinion about global warming.
Your opinion
Crop rotation-
changing what has been planted each year to save soil
Deforestation-
cutting down trees without replanting
conservation-
careful use of resources
Irrigation-
process in which water is collected and distributed to crops.
4 days in the year are significant. What day is the earths North Pole tilted towards the sun?What is this called? This is the day with the most sunlight.
June 21st Summer Solstice
On——–the North Pole is tilted away from the sun. This is the day with the least amount of sunlight.
December22
when is the spring equinox?
March 21
When is the fall equinox?
September 23
