MON
23
TUES
24
WEDS
25
THURS
26
Bring textbook
30
31
1
7
27
2
4
5
10
11
12
18
19
QUIZ
3
9
SUN
29
QUIZ
8
SAT
28
Bring textbook
Reading DUE
6
FRI
No School
Unit Test
13
20
AM & PM Reviews
27
14
15
16
17
AzMerit - Writing
AzMerit - Reading
AzMerit - Math
AzMerit - Math
21
22
23
24
25
26
30
1
2
3
AM & PM Reviews
28
AIMS - Science
29
Announcements
THUR:
• Textbooks
• Biogeochemical Cycle packets due
FRI:
• QUIZ #1 (Population Pyramids, biogeochemical cycles, speed problems)
• SIN Article #1 Due
TUES 3/31:
• Reading Annotations Due – Chapter 9 section 2 & 3
Condensation
7 pts
Precipitation over land
Precipitation over ocean
Evaporation from ocean
transpiration
Runoff from Surface
Seepage from ground
A. Atmosphere
B. Photosynthesis
N. Products of Combustion
P. Exchange with Ocean
C. Forest
D. Respiration in
Plants
E. Plant
Consumption
O. Forest Fire
11 pts
G. Respiration in
Animals
H. Decay
F. Animal Consumption
M. Combustion
J. Respiration in
Detritus
L. Fossil Fuel Processing
K. Conversion to Fossil Fuel
I. Detritus Feeders
A. Atmosphere
6 pts
B. Nitrogen Fixation
K. Denitrification
C. Legume Plant
E. Ammonification
D. Nitrogen-fixing Bacteria
J. Consumption by animals
I. Consumption
by plants
F. Nitrification
G. Nitrosomes
H. Nitrobacter
5 pts
Total = 29 pts
H. Runoff to Ocean
A. Erosion from Rock
J. Geologic Upthrust
G. Animal Waste
F. Plant Waste
B. Absorption by
plants
C. Concentration
in Plant Tissues
D. Plant Consumption
E. Grazing
I. Marine Sediment
Effects of Human Activities on
Water Cycle
• We alter the water cycle by:
•
•
•
•
Withdrawing large amounts of freshwater.
Clearing vegetation and eroding soils.
Polluting surface and underground water.
Contributing to climate change.
Effects of Human Activities on
Carbon Cycle
We alter the carbon cycle by adding
excess CO2 to the atmosphere
through:
Burning fossil fuels
 Cars
 Factories
 Burning wood/vegetation
Clearing vegetation faster than it is
replaced.
Respiration
Figure 3-28
Effects of Human Activities on the
Nitrogen Cycle
• We alter the nitrogen cycle by:
• Adding gases that contribute to acid rain.
• Adding nitrous oxide to the atmosphere through farming
practices which can warm the atmosphere and deplete
ozone.
• Contaminating ground water from nitrate ions in inorganic
fertilizers.
• Releasing nitrogen into the troposphere through
deforestation.
Effects of Human Activities on the
Phosphorous Cycle
• We remove large amounts of phosphate from the earth to make fertilizer.
• We reduce phosphorous in tropical soils by clearing forests.
• We add excess phosphates to aquatic systems from runoff of animal
wastes and fertilizers.
• Eutrophication: natural process; over 1000’s of years, lakes fill in with sediment,
become marshes then dry land
• Cultural Eutrophication: same process, but speeded enormously by loading
with “limiting nutrients” (typically P, sometimes N)
• Problems associated with cultural eutrophication
• Algal blooms
• Water anoxia
Learning Scale
4 – I can diagram out the key components of each biogeochemical cycle
and explain the human impact for each cycle
3 – I can explain most of each biogeochemical cycle and some of the
human influences
2 – I can explain some of the biogeochemical cycles and some human
influences
1 – I need to review
Physics – Motion Chapter 9
• Lots of things are in motion
• https://www.nbclearn.com/portal/site/learn/science-of-the-olympicwinter-games
Physics - Motion
• EQ: How do scientists calculate speed and motion? How do you graph
that?
I. Describing and Measuring Motion
• When do you know something has moved?
• Car wash
A. Reference Point – place or object used for
comparison to determine if something is in motion
Motion – an object is in motion if it changes position relative to a
reference point
II. Speed & Velocity
? How do scientists find the speed of an object?
Why would you want to know the speed of something?
• Speed limit
• Driving time
• Sports (running, lacrosse & hiking)
II. Speed & Velocity
A. Calculating Speed
1. If you know the distance an object travels in a certain amount of time, you
can calculate the speed of the object
2. Speed is a type of rate (unit of time)
3. ****** Speed = distance
time
4. Practice Problems
II. Speed & Velocity
4. Practice Problems
1. A student travels 5 km in 24 min, what is their speed?
Speed = d/t
(1 km = .621 mile) ?
=
II. Speed & Velocity
4. Practice Problems
2. A bike moves 35 m in 5 seconds. What is its speed?
Speed = d/t
=
II. Speed & Velocity
4. Practice Problems
3. The speed of the car is 15 km/h and it’s been traveling for 3 hours.
How many km has it traveled?
Speed = d/t
=
Speed Lab
• https://www.nbclearn.com/portal/site/learn/science-of-nfl-football
• Purpose:
• Calculate an object’s speed and compare relationships on a graph
• Remember SPEED = _________
III. Velocity
• How are velocity and speed related?
• http://ed.ted.com/on/MwI0AXXZ
• Describes:
• Speed
• Direction
• Ex:
• Weather
• Storm is traveling 25km/hr eastward
• Sports
• Basketball clips