Define
the study of the earth
geology
sand
what makes up a rock
one or two minerals
the process that breaks dow and changes rocks
weathering
Define weathering
the process that breaks down or changes rocks
The dropping of sediment by water or wind in a new place
deposition
Give some examples of organic material that can be found in some sedimentary rock.
what does the geologic time scale show
it shows the order in which the animals died, NOT WHEN they died. The slower moving animals are at the bottom...they couldn't move fast enough to escape the flood waters.
The fastest moving animals are at the top. It shows that they could escape the quickest.
decayed plant and animal material in soil
humus
uses colors to show landforms such as deserts, mountains, and rivers
physical maps
Glaciers form these where ponds and lakes can form
U-shaped valleys
Dunes are hills of sand formed by ______ deposition
wind
the rock that forms from cooled magma or volcanic lava
igneous
breaking rocks into smaller pieces without changing the composition of the rocks
physical weathering
uses counter lines to show both he shape of the land and that altitude of it
topographic map
Glaciers can also form hills, called these
morraines
layer of soil in which most plants grow
topsoil
the loose material that is made up of weathered rock, water, air, and humus
soil
when water and oxygen combine with iron in a rock, chemical weathering takes place and makes this "new" kind of matter
rust
a person who makes maps
cartographer
Give some examples of landforms found on earth
canyons, gorges, islands, buttes, mesas, mountains
the layer of oil that is mostly coarse, weathered rocks and very little humus
subsoil
Most of the rocks that formed during the Flood were ________ rocks
sedimentary
causes chemical weathering
acid rain
when did glaciers form?
We believe that glaciers formed after the Flood during one Ice Age that lasted a few hundred years. During that time, glaciers covered about 1/3 of the earth.