Go to this website: Science World Magazine
1) Then click on the sign in button
2) Enter this password for our class: CottaS303 (make sure to use CAPITAL letters for C and S)
3) Then look at the recent issues for the magazine for April 18, 2016 with the melting ice on the cover
4) Then click on the digital issue and read the article in that magazine entitled: "Massive Meltdown" on page 8-11.
5) After reading, look at page 9 for the box that says "Click for 4 bonus skills sheets" and click on it.
6) Go to the first page of the skills sheets entitled "Explore an Article" and answer those five questions on a separate sheet of paper.
For EXTRA CREDIT:
1) Go to the May 9, 2016 issue with octopus on the cover
2) Page 20-22 of the issue
3) Read the clues to uncover the mystery element
4) Answer what the element is and the five questions on page 22 on a separate sheet of paper
If you have problems, e-mail me: julianne.cotta@lausd.net
Quark
Quark in his Halloween costume
Wednesday, April 27, 2016
Sunday, April 24, 2016
Study Guide for Energy Test
--Be able to explain what heat is and be able to draw a model that show the heat flow between two objects.
--Be able to explain what temperature measures and be able to draw a model
--Know how to use the formula Q=s x m x delta (triangle) T and know what each of the letters represents and MEANS
--Know what exothermic and endothermic mean and be able to distinguish in a reaction which is exo or endo by how the particles are moving (for example--melting--from solid to liquid--particles are speeding up thus need to gain energy--so it is endothermic)
--Be able to model an exothermic and endothermic reactions
--Know what the greenhouse effect is and how it works heating up the earth
--Know what are the greenhouse gases
--Know what the different types of fossil fuels are--petroleum, coal and natural gas and where they come from
--Know what are alternative energy sources such as solar, wind, nuclear
--Be able to explain what temperature measures and be able to draw a model
--Know how to use the formula Q=s x m x delta (triangle) T and know what each of the letters represents and MEANS
--Know what exothermic and endothermic mean and be able to distinguish in a reaction which is exo or endo by how the particles are moving (for example--melting--from solid to liquid--particles are speeding up thus need to gain energy--so it is endothermic)
--Be able to model an exothermic and endothermic reactions
--Know what the greenhouse effect is and how it works heating up the earth
--Know what are the greenhouse gases
--Know what the different types of fossil fuels are--petroleum, coal and natural gas and where they come from
--Know what are alternative energy sources such as solar, wind, nuclear
Saturday, April 23, 2016
HW #17 for 4/25
Go to this website: Science World Magazine
1) Then click on the sign in button
2) Enter this password for our class: CottaS303 (make sure to use CAPITAL letters for C and S)
3) Then look at the recent issues for the magazine for April 18, 2016 with the melting ice on the cover
4) Then click on the digital issue and read the article in that magazine entitled: "Massive Meltdown" on page 8-11.
5) After reading, look at page 9 for the box that says "Click for 4 bonus skills sheets" and click on it.
6) Go to the third page of the skills sheets entitled "Heat-Trapping Gases" and answer those five questions on a separate sheet of paper.
If you have problems, e-mail me: julianne.cotta@lausd.net
1) Then click on the sign in button
2) Enter this password for our class: CottaS303 (make sure to use CAPITAL letters for C and S)
3) Then look at the recent issues for the magazine for April 18, 2016 with the melting ice on the cover
4) Then click on the digital issue and read the article in that magazine entitled: "Massive Meltdown" on page 8-11.
5) After reading, look at page 9 for the box that says "Click for 4 bonus skills sheets" and click on it.
6) Go to the third page of the skills sheets entitled "Heat-Trapping Gases" and answer those five questions on a separate sheet of paper.
If you have problems, e-mail me: julianne.cotta@lausd.net
Thursday, April 21, 2016
Summer Opportunities
1) USC Engineering Program
Dates: July 18-29th
Deadline: May 1st
Information
Apply
Requirements: Unofficial transcript and a teacher recommendation
2) UCLA Physics and Astronomy
Dates: June 14-August 2 on Tuesday evenings from 7:30-10:30pm
Deadline: May 1st
Information
Apply
3) L.A. Sanitation Internship
Dates: June 20th to July 29th
4 hours a day paid at $10 a hour
e-mail to send application: rhonda.dowdy@lacity.org
Requirements: Resume, letter of recommendation and transcript
Deadline: April 29th
4) FORM academy at UCLA
Dates: August 1st to 6th from 9am-4pm
e-mail to request and send an application: bdrucker@arts.ucla.edu
Deadline: May 30th
Dates: July 18-29th
Deadline: May 1st
Information
Apply
Requirements: Unofficial transcript and a teacher recommendation
2) UCLA Physics and Astronomy
Dates: June 14-August 2 on Tuesday evenings from 7:30-10:30pm
Deadline: May 1st
Information
Apply
3) L.A. Sanitation Internship
Dates: June 20th to July 29th
4 hours a day paid at $10 a hour
e-mail to send application: rhonda.dowdy@lacity.org
Requirements: Resume, letter of recommendation and transcript
Deadline: April 29th
4) FORM academy at UCLA
Dates: August 1st to 6th from 9am-4pm
e-mail to request and send an application: bdrucker@arts.ucla.edu
Deadline: May 30th
Wednesday, April 20, 2016
HW #16 for 4/21
Visit this website about climate change and answer the following questions:
http://climatekids.nasa.gov/menu/big-questions/
Go to the section entitled: "What Is Global Climate Change?"
1. Explain the difference between climate and weather.
2. Explain what is our "global climate" is and the parts of our global climate.
Go to the section entitled: "What is the Greenhouse Effect?"
3. Compare how the Earth's atmosphere acts like an actual greenhouse.
4. What is the problem that increased carbon dioxide in our atmosphere is creating for the ocean? How is it changing the ocean?
5. What is the "cloud riddle" that has scientists confused?
Go to the section entitled: "How do we know the climate is changing?"
6. How many degrees is the planet warming? How many of the last twelve years have been the hottest on record?
7. How are scientists able to tell what Earth was like many years ago?
http://climatekids.nasa.gov/menu/big-questions/
Go to the section entitled: "What Is Global Climate Change?"
1. Explain the difference between climate and weather.
2. Explain what is our "global climate" is and the parts of our global climate.
Go to the section entitled: "What is the Greenhouse Effect?"
3. Compare how the Earth's atmosphere acts like an actual greenhouse.
4. What is the problem that increased carbon dioxide in our atmosphere is creating for the ocean? How is it changing the ocean?
5. What is the "cloud riddle" that has scientists confused?
Go to the section entitled: "How do we know the climate is changing?"
6. How many degrees is the planet warming? How many of the last twelve years have been the hottest on record?
7. How are scientists able to tell what Earth was like many years ago?
Monday, April 18, 2016
HW #15 for 4/19
HW #15 for 4/19:
1. A student performed an experiment in which a yellow solution is poured into a beaker
containing a colorless solution. A bright yellow precipitate formed, and the temperature of the
reaction container increased.
Which of the following statements is true?
A. The reaction is endothermic.
B. The formation of the precipitate is a physical change, not a chemical change.
C. The reaction is exothermic.
D. none of the above
2. The amount of heat gained or lost by a substance depends on all of the following
EXCEPT:
A. the change in temperature of the substance.
B. the change in volume of the substance.
C. the mass of the substance.
D. the specific heat capacity of the substance.
3, Which change of phase is endothermic?
A. CO2(g) ® CO2(s)
B. H2O(l) ® H2O(s)
C. I2(s) ® I2(g)
D. H2O(g) ® H2O(l)
4. You place 100.0 g of a hot metal in 100.0 g of cold water. Which substance (metal or water)
undergoes a larger temperature change? Why is this?
5. What is the difference between “quality” and “quantity” of energy? Are both conserved? Is either
conserved?
1. A student performed an experiment in which a yellow solution is poured into a beaker
containing a colorless solution. A bright yellow precipitate formed, and the temperature of the
reaction container increased.
Which of the following statements is true?
A. The reaction is endothermic.
B. The formation of the precipitate is a physical change, not a chemical change.
C. The reaction is exothermic.
D. none of the above
2. The amount of heat gained or lost by a substance depends on all of the following
EXCEPT:
A. the change in temperature of the substance.
B. the change in volume of the substance.
C. the mass of the substance.
D. the specific heat capacity of the substance.
3, Which change of phase is endothermic?
A. CO2(g) ® CO2(s)
B. H2O(l) ® H2O(s)
C. I2(s) ® I2(g)
D. H2O(g) ® H2O(l)
4. You place 100.0 g of a hot metal in 100.0 g of cold water. Which substance (metal or water)
undergoes a larger temperature change? Why is this?
5. What is the difference between “quality” and “quantity” of energy? Are both conserved? Is either
conserved?
Friday, April 15, 2016
HW #14 for 4/18
1.) A process is exothermic if:
A.) Energy flows into the system
B.) Energy flows out of the system
C.) The energy level remains constant
D.) The temperature of the system increases
2.) How many CALORIES of heat must be added to 3.0 x 102 g of water in order to raise its temperature by 40.0 degrees C? (Hint: first find Joules and then convert to calories)
3.) If the same quantity of heat is supplies to 100 g of each of the following substances, which substance will increase the most in temperature? (look at table on pg. 329): Water, iron, gold, ice, or carbon
4.) When 100 g of ice melts to form 100 g of water, the process is exothermic or endothermic? Explain why.
5.) Knowing that 1 calorie = 4.184 Joules, how many calories of energy are reguired to raise the temperature of 10.0 g of water by 1 degree Celsius?
6.) Which change results in a release of energy?
A. The melting of water
B. The boiling of water
C. The evaporation of water
D. The condensation of water
7.) Compare the amount of energy and molecules in 1 mole of water at 0 degrees Celsius and 1 mole of water at 23 degrees Celsius.
A. The amount of energy is the same and the number of molecules is the same in both
B. The amount of energy is the same, but the number of molecules is greater at 23 degrees Celsius
C. The amount of energy is greater at 23 degrees and the number of molecules is greater
D. The amount of energy is greater at 23 degrees and the number of molecules is the same
A.) Energy flows into the system
B.) Energy flows out of the system
C.) The energy level remains constant
D.) The temperature of the system increases
2.) How many CALORIES of heat must be added to 3.0 x 102 g of water in order to raise its temperature by 40.0 degrees C? (Hint: first find Joules and then convert to calories)
3.) If the same quantity of heat is supplies to 100 g of each of the following substances, which substance will increase the most in temperature? (look at table on pg. 329): Water, iron, gold, ice, or carbon
4.) When 100 g of ice melts to form 100 g of water, the process is exothermic or endothermic? Explain why.
5.) Knowing that 1 calorie = 4.184 Joules, how many calories of energy are reguired to raise the temperature of 10.0 g of water by 1 degree Celsius?
6.) Which change results in a release of energy?
A. The melting of water
B. The boiling of water
C. The evaporation of water
D. The condensation of water
7.) Compare the amount of energy and molecules in 1 mole of water at 0 degrees Celsius and 1 mole of water at 23 degrees Celsius.
A. The amount of energy is the same and the number of molecules is the same in both
B. The amount of energy is the same, but the number of molecules is greater at 23 degrees Celsius
C. The amount of energy is greater at 23 degrees and the number of molecules is greater
D. The amount of energy is greater at 23 degrees and the number of molecules is the same
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