Scientific Method
What can scientists do to see if their investigations are reliable?
Repeat them!
Name three landforms
mountain, river, lake, coastline, dune, delta, glacier
Physical weathering and chemical weathering
What is erosion?
Sediments being moved
Name two natural sources of air pollution
volcanos, gas from cow manure, wildfires
Which of these is a model:
-A list of supplies
-A globe
-An eraser
A globe
What is a delta and how are deltas formed?
A delta is a deposit of sediment where a river slows as it enters the ocean.
What is physical weathering?
When physical actions wear away and crack rocks
This is sediments being left in a new place
Deposition
Name two human sources of air pollution.
vehicle exhaust, factories, burning fossil fuels
Give an example of a model
any one of there: a picture, a 3D model, a drawing, a virtual lab etc.
What is a dune and how are dunes connected to Florida?
A dune is a mound of wind-deposited sand. Florida has coastal dunes behind sandy beaches.
What is chemical weathering?
When different kinds of weathering break the bonds that hold the minerals together and turn it into a whole new substance
Describe the chain of events in the movement of sediments.
Weathering --------> Erosion -----------> Deposition
This is an increase in population in cities and towns with people moving away from the country
Urbanization
Why do scientists use models?
To help study things that are too big, too small, or too time-consuming to see happen.
What is a mountain and how are mountains connected to Florida?
A mountain is an area of high elevation. Sediments from the Appalachian Mountains were transported to Florida by rivers and streams to help form the land here.
Name a type of chemical weathering and a type of physical weathering.
Chemical: oxidation, groundwater acid, acid rain, or plant acid
Physical: Plant action, Animal action, Abrasion, Exfoliation, Ice Wedging
How do rough waves impact beaches?
Rough waves can wash small sediment away and leave only rocky coastline behind.
This is when too many animals live on a small amount of land and destroy the roots of the grass that holds the soil in place.
Overgrazing
Name the three types of variables in a controlled experiment
independent, dependent, control
What is a glacier and how are glaciers connected to Florida?
A glacier is a large mass of ice. When glaciers melted many years ago, the sea level around Florida rose and cause the size and shape of Florida to change.
How are chemical and physical weathering similar and how are they different?
Both break down rocks.
Physical breaks down rocks mechanically into smaller, or differently shaped pieces but they’re still the same chemically. Chemical changes the makeup of the rock into something that can’t be put back.
How does sedimentary rock form?
By sand and other materials being deposited and hardening over time
What are two of the human impacts that can lead to desertification and erosion?
overgrazing, deforestation and urbanization