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42 Cards in this Set

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A ___ is a slid substance found naturally in the earth's surface.
mineral
Concentrated areas of specific minerals are called ___.
veins
Veins of minerals are often found near ____ ____.
volcanic areas
____ is material with usable amounts of metal in them.
ores
______is the process of separating metal in the ore from the other materials.
smelting
Steps to smelting:
1)
2)
3)
1)crush and heat the ore until it is liquid
2)the nonmetal part will float to the top of the liquid
3)the metal will sink to the bottom.
________ is the nonmetal part of ore.
dross
Some metals are called ___ because of their rarity.
precious
___ is a soft and malleable (shapeable) metal often used in jewelry.
gold
______ is a metal often mixed with other metals and is used in photographic film processing.
silver
____ is an red-orange metal often used in wiring.
copper
____ is a very strong and durable metal used to make tools and buildings.
iron
_____ is a very practical metal that is strong and lightweight and is the most abundant metal in the earth's crust.
alumium
What is one way we can preserve the metals on earth?
recycling the metals
____ is a renewable resource that can be fertile if we take care of it.
soil
What are some ways we can converse our soil.
1)
2)
3)
4)
1)fallowing
2)fertilize the soil
3)contour plowing
4)ground cover
_____ means to let a field rest by not planting anything that year.
fallowing
_____ is the adding of organic material and minerals back into the soil
fertilizing
_____ is a low growing crop planted in a unused field to keep the topsoil from blowing away.
ground cover
__ ___ is the plowing of a hill around the hill instead of up and down the hill to slow the flow of water erosion.
contour plowing
___ of the Earth's surface is water.
3/4
All the Earth's water found in lakes, oceans, streams, rivers, soil and air are called the ___.
hydrosphere
The path of water from the air to the land and back is called the __ ___.
water cycle
___ contain most of the Earth's water.
oceans
_____ is the salt in the water.
saline
_____ is the process of removing the salt out of ocean water.
desalination
___ play a key role in the carbon dioxide -oxygen cycle of the Earth.
ocean
_____ a small plant in the ocean produce over 50% of the oxygen for the Earth.
phytoplankton
Name three ways the ocean helps us:
1 2 3
1)provides water
2)provides oxygen
3)provides winds to keep temperatures mild
The majority of liquid, fresh water is found _____.
underground
___ ____ is water that seeps into the ground from rain.
ground water
____ are layers of sand, gravel or bedrock that hold and move ground water.
aquifer
Water becomes a part of the atmosphere through _____
evaporation
_____ is the water vapor in the air.
humidity
___% of the fresh water is found in the Antarctica.
70%
___ ___ is a huge piece of ice on level ground.
ice sheets
The ice sheet covering the Antarctica is _____ deep.
3 miles
An ice sheet that moves over water is called a ___ __
ice shelf
The most famous ice shelf is the ___ ___ ___
Ross Ice Shelf
When ice shelves break off and float by themselves, it is called an ___.
iceberg
__ ____ is sea water that freezes.
sea ice
Ways we can conserve our resources:
1
2
3
1)reduce the amount of resources we use
2)reuse material we have
3)recycle material