Friday, May 22 (A day) Tuesday, May 26 th (B day) Science Review
Earth Science Slide 2 Review Where do rocks come from? How many
different types of rock exist? Can rocks change, and if so, how?
Slide 3 Guided notes review sheet Today we will review : The Rock
Cycle Soil and soil horizons Stewardship Soil Conservation Slide 4
Part 1: Video and worksheet Use the information in the video to
complete your worksheet https://www.youtube.com/watch?v=9lyCYXXIHT0
You will be filling in the names for each of the boxes Listen
carefully! Slide 5 Remember For any rock to change into another
rock, it must undergo change. These changes could include:
Weathering and erosion Heat and pressure Compaction Melting Slide 6
Part 2: Guided Notes Soil How much of Earth's crust contains usable
soil? 3.125% Slide 7 Write in Notebook The process of soil
formation takes 100,000s of years Slide 8 Write in notebook Soil =
broken down weathered rock Soil: mixes with surface materials Slide
9 Soil is a mixture of Sediments (weathered rock particles) largest
amount Humus (decomposed organic matter from plants and animals)
Minerals (building blocks of rocks) Bacteria and fungi
(decomposers) Water Air Slide 10 Soils are different due to the
parent rock Parent rock: original rock from which soil was formed
Slide 11 Soil texture: Sand (largest particle size, feels gritty)
Silt (medium particle size, feels smooth or floury) Clay (smallest
particle size, feels sticky) Slide 12 Soil Horizons (layers) A
horizon: topsoil (surface layer); high in humus (organics) and
insoluble minerals B horizon: subsoil, high in soluble minerals and
clay, lower in organics C horizon: larger rock fragments on top of
parent rock (bedrock) A horizon is the most fertile!!!! Slide 13
Stewardship of the Earth The practice of managing, monitoring, or
looking after the Earth for future generations Slide 14 Natural
Resources Nonrenewable resources: resources (coal, oil, natural
gas) that are used and never replaced Renewable resources:
resources that are reformed naturally over periods of time Slide 15
Pedosphere The zone where soils are found and where new soils are
being formed Slide 16 Human Activities. Have impacted the
Pedosphere by removing or disturbing the Earths natural vegetative
cover (trees, grasses, plants) This includes: 1. The Dust Bowl2.
Deforestation 3. Overgrazing 4. Industrialization 5. Farming 6.
Soil as a vector Slide 17 The Dust Bowl Dirty Thirties (1930s) a
period of severe drought and dust storms Native grasses were
removed for farmland then s evere droughts and high winds created
massive dust storms Slide 18 Deforestation Trees cut down leaving
soil left exposed (easily eroded or blown away) Slide 19
Overgrazing W hen plants are eaten by animals without time for
plants to re-grow. Slide 20 industrialization A country / society
changing from an agricultural (farming) society to a manufacturing
and industry based society Slide 21 Agricultural activities R
educes soil fertility (vitamins and nutrients) and native
vegetation, increases erosion Slide 22 Soil can carry diseases Soil
as a vector Soils fertilized with human and animal waste which can
transmit disease and infect crops (people can get sick) Slide 23
Remote Sensing Satellites in space used to look at the Earths
surface Takes pictures of the Earth Shows how Earths surface has
changed due to humans Information used to protect, preserve, and
predict future changes Slide 24 Soil Conservation the management of
soil to prevent its destruction Slide 25 2 main purposes of Soil
Conservation 1. Prevent and reduce erosion (hold the soil in place)
2. Maintain and improve soil fertility (vitamins and nutrients in
soils) Slide 26 Soil Conservation Techniques Contour Plowing
Conservation Tillage Terracing Crop Rotation Slide 27 BrainPop
Review Now You will be logging into Brainpop to watch specific
videos and take CLASSIC QUIZZES You will receive a handout with the
login information, a list of videos to watch and place to record
your quiz scores Raise your hand for your handout now
