What is a qualitative observation?
Data observed with senses
What is an example of a qualitative observation?
What is a quantitative observation?
Data focused on numbers
What is an example of quantitative observation?
What is an inference?
What is an example of an inference?
The sun came up in the past so it will tomorrow
Explain what makes a molecule polar?
Pos+ end / Neg- end
Why is water considered a polar molecule?
Pos+ hydrogen / Neg- oxygen
Why does land and air heat and cool at different rates?
Water reflects (high specific heat)Land absorbs (more solar radiation than water)
Breaking big rocks into little ones
Give an example of weathering.
Explain chemical weathering.
Rocks broken down by chemical reaction
Give an example of chemical weathering
Where is the most fresh water found on earth?What percentage?
Where is the most salt water found on earth?What percentage?
Where does most of the pollution go to once it leaves the Chesapeake Bay?
What is an estuary
Partially enclosed coastal body of brackish water
What is the largest estuary in the US?
What is a watershed?
List 4 living factors that affect the watersheds.
People, plants, animals, insects
List 4 non-living factors that affect the watersheds.
Sunlight, oxygen, temperature, soil
What are the functions of wetlands?
control floods, habitat/filter pollution
What tools would a scientist use for the following:1. salinity2. turbidity3.temperature4. pH5. dissolved oxygen
1. salinity -- refractometer2. turbidity -- turbidity tube3.temperature -- thermometer4. pH -- pH probe paper5. dissolved oxygen -- D.O. meter
What does the atomic number tell us?
protons and electrons
What does the symbol tell us?
Name of the element
What does the mass tell us?
Protons and neutrons
--- C6 H12 O6 ---How many elements?How many atomsIllustrate what the molecule will look like.
--- C6 H12 O6 ---How many elements - 3How many atoms - 24
What are the 2 different gasses in the Earths atmosphere?Create a pie chart that displays the different gasses
Nitrogen 78%Oxygen 21%
What is a covalent bond?
sharing of electronsnon-metals
What is an ionic bond?
electrons are transferred from one atom to anotherMetals and non-metals
Explain what a compound, mixture, and element are
What happens during a chemical reaction
one or more substances change into one or more new substances
Illustrate an atom, its particles, and charges