System/Feedback Loops/Spheres
Carbon Cycle
River Study
Atomic Structure
Periodic Table and Periodic Table Categories
100
What is a closed system, and give an example for it.
Matter does not enter or leave. EX: Earth
100
What process that make the CO2 can add to the atmosphere by plant and also remove the CO2 from the air ?
-Photosynthesis
100
What is transparency, what units transparency measure in to be a considered healthy river?
-Transparency is to measure how clean the water is, and it need to has a transparency of 75cm or above to considered to be a healthy river.
100
What is an atom, and what is located in the center of the atom?
- Atom is the smallest particle of matter, and the nucleus is located in the center of the atom.
100
What are the periods and group?
-Periods is the row in the periodic table, and it tell how many energy level an atoms has. -Group is the columns in the periodic table, have the similar chemical properties, and it determines the number of electrons in that element's outer shell.
200
What is positive feedback loop?
Chain reactions that moves part of the system, toward *extremes*(hi/lo)
200
Name three way that carbon can add to the atmosphere.
1. Respiration 2. Combustion 3. Decomposition 4. Deforestation 5. Diffusion
200
List 3 ways dissolved oxygen get into the stream?
- Diffusion, Aeration, Photosynthesis
200
What is the energy levels, and what it had in it?
-It's surround the nucleus, and it's contain electrons(-)
200
What is the magic number that make the element happy?
8
300
What is the negative feedback loop?
Chain reactions that moves part of the system towards *stable*(equal)
300
Does the total amount of the fossil fuels increase or decrease when human burning the fossil?
The carbon changes form/location
300
What is stream flow, and tell whether drought and water use will increase or decrease the stream flow.
- Stream flow measure the volume of water moving over giving time. Drought and water use decrease the steam flow because there are no water refill back to the stream.
300
How to determine number of each particle: Proton, Neutron, and Electron.
The number of proton is the atomic number, which is located on the top left of element square. The proton and the electron number are the same. Neutron number is the mass number subtract the proton number.
300
What are the different between metals and nonmetals?
Metal is shiny, malleable, and easily lose electrons. Nonmetal is dull, brittle, and tend to gain electrons.
400
Give examples for positive and negative feedback loops
Positive ex: rugby game -Negative ex: football
400
What would cause carbon levels to change in this way during each year?
Changes in the amount of plant growth during the year.
400
List 3 ways that pollution affects a river with small stream flow vs. larger stream flow.
1. Can't handle much pollution 2. Pollution can stay in the water 3. Organism suffer
400
What is the valence electrons? Then give a number of valence electrons for Sulfur(S).
- Valence electrons is the outer energy level electrons, and we can find the number of valence electrons by looking at the element's *Group* number. - Sulfur had 6 electrons
400
Explain why the noble gas is stable?
-Because the noble gas already has full outer shell.
500
List each of the Earth's four spheres and give an example for each.
- Atmosphere (air) EX: CO2 in the air -Geosphere (rock) EX: sand -Hydrosphere (water) EX: river -Biosphere (life) EX: trees
500
Carbon can end up stored in the ground as fossil fuels. List fews example for it.
EX: limestone, coal, oil, gas.
500
How human activity will make the stream had low dissolved oxygen?
If near the stream have a farm, then the animals manure can get into the stream, cause algae bloom in the water, and the bacteria will eat up that algae bloom. Which will make the stream become a dead zone.
500
What is ion?
- Ions are charge atom will have either a positive or negative charge.
500
What are in the element spare?
-Atomic number, atomic mass, chemical symbol, and element name.
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