PLS HELP THIS IS ACTUALLY SCIENCE
What three things do we need to manage for the human population keep growing ?
Answer:
Death rates, Birth rates, and immigration rates
Explanation:
The three things that are required for growing the human population is Death rates, Birth rates, and immigration rates.
What is Death rates, Birth rates, and immigration rates?Birth rate represent the number of live births per 1,000 persons in a year. Death rate represent the number of deaths per 1000 persons in a year. And, migration represent the movement of people from one place to another for better job facilities, living conditions etc.
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A sample of an unknown substance has a mass of 42g and a volume of
28 cm3. What is the density of the substance?
Answer: 1.5 g/cm^3
Explanation:
Density is mass over volume
42g / 28 cm^3 = 1.5 g/cubic cm
hope this helps
Which net force occurs when combined forces are balanced?
A. 0 N
B. 50 N
C. 100 N
Answer:
A. 0 N
Explanation:
One force is subtracted from the other to calculate the net force. If the opposing forces are equal, or balanced, the net force is zero.
Hope this helps!
Our body system is powered by which type of energy?
mechanical energy
chemical energy
thermal energy
light energy
which process is making the pots handle hot?
Answer:
C it is C and
Answer:
A, conduction.
there was no science so like -w- uh huh... ASAP PLEASEEE
Answer:
ok so the answer is
4(energy)
5(kinetic energy)
6(potential energy)
7(gravity)
8(work)
Explanation:
I already learned this last year.
A rock layer that collected and stores water is called
A. An aquifer
B. An estuary
C. A glacier
D. A hydrosphere
Answer:
a
Explanation:
Aquifers are underground layers of rock that are saturated with water that can be brought to the surface through natural springs or by pumping.
PLEASE HELP 3.05 The atmosphere and you lab report
Answer:
Objective(s):
to learn about the atmosphere and how we can help it
Hypothesis:
Carbon dioxide emissions will increase in the next century and global temperatures will increase.
Procedure:
Complete your hypothesis (above).
Identify the independent (test) variable and the dependent (outcome) variable: The emission is the independent variable. The temperature is dependent variable.
Practice using the computer model. Select each marker to see what it does. Here is a summary you can refer back to as you complete your experiment.
Carbon Dioxide Emissions Slider: You will use the arrows to change the amounts of carbon emissions.
Time Step Size: This will allow you to view the data every 5 years or every 10 years.
Start Over: Use this to reset the model if needed.
The current carbon emissions are 9.8 gigatons or 9.8 billion tons. Complete all three scenarios to find out what happens to the global temperature if these emissions stay the same, decrease, or increase over the next century. Follow the instructions in the Data section of this report.
Data:
For each scenario, record the carbon dioxide emission rate and the global temperature. The data for the years 1960–2010 are already filled out for you.
Scenario One: Carbon dioxide emissions stay the same
Set the carbon dioxide emissions rate to 9.8 gigatons.
Set the time step size to 10 years.
Select step forward until you have the data through the year 2110.
Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Maintain carbon dioxide emissions at 9.8 for the rest of scenario one.
2020 9.8 58.2
2030 9.8 58.6
2040 9.8 58.9
2050 9.8 59.1
2060 9.8 59.5
2070 9.8 59.7
2080 9.8 60
2090 9.8 60.1
2100 9.8 60.5
2110 9.8 60.7
Scenario Two: Carbon dioxide emissions decrease
Set the carbon dioxide emissions rate to 9.8 gigatons.
Set the time step size to 10 years.
Select the step forward button once.
Decrease the carbon dioxide emissions by 0.2 and press step forward.
Continue stepping forward once, decreasing the carbon emissions each time, until you reach 2110.
Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Decrease carbon dioxide emissions by 0.2 each step forward for the rest of scenario two.
2020 9.6 58.2
2030 9.4 58.6
2040 9.2 58.9
2050 9.0 59.1
2060 8.8 59.4
2070 8.6 59.6
2080 8.4 59.8
2090 8.2 60
2100 8.0 60.1
2110 7.8 60.3
Scenario Three: Carbon dioxide emissions increase
Set the carbon dioxide emissions rate to 9.8 gigatons.
Set the time step size to 10 years.
Select the step forward button once.
Increase the carbon dioxide emissions by 0.2 and press step forward.
Continue stepping forward once, increasing the carbon emissions each time, until you reach 2110.
Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Increase carbon dioxide emissions by 0.2 for each step forward for the rest of scenario three.
2020 10 58.2
2030 10.2 58.7
2040 10.4 59
2050 10.6 59.2
2060 10.8 59.6
2070 11 59.9
2080 11.2 60
2090 11.4 60.4
2100 11.6 60.8
2110 11.8 61
Conclusion:
Use your data to answer the following questions. Use complete sentences, and be as detailed as possible.
Summarize how the carbon emissions affected the atmospheric temperature in each of the three scenarios:
Scenario One: If the carbon emissions stay the same the temperature will still rise.
Scenario Two: If the carbon emissions go down then the temperatures will go up but slowly.
Scenario Three: If the carbon emission goes up the temperatures will also go up faster.
Was your hypothesis supported by your results or not? Explain how you know. Yes, my hypothesis was correct. Because the data shows that as the carbon emissions increase the temperature will as well.
Explain the difference between the greenhouse effect and global warming. Global warming is a change in the earth that is causing it to heat up. The greenhouse effect is a natural change due to sunlight and the atmosphere.
Based on your knowledge of how the greenhouse effect works, why does the level of carbon dioxide affect the global temperature? because the more carbon dioxide the weaker the ozone layer gets cause that's the thing that keeps us safe from all the suns heat
Name three sources of atmospheric carbon dioxide. Three sources of atmospheric carbon dioxide are decomposition, ocean release, and respiration.
Explanation:
i got a 97 on it
Name and Title
Include your name, instructor's name, date, and name of lab.
Objective(s)
In your own words, what was the purpose of the lab?
The purpose of the lab is earth and how we can help.
Summary- the future/global warming
Hypothesis
In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Carbon dioxide emnissions will increase and global temperatures will increase too.
Procedure
1. Complete your hypothesis (above). (done)
2. Identify the independent (test) variable and the dependent (outcome) variable:
The emissions are the independent variable and the dependent variable is the temperatures.
3. Practice using the computer model. Select each marker to see what it does. Here is a summary you can refer back to as you complete your experiment.
o Carbon Dioxide Emissions Slider: You will use the arrows to change the amounts of carbon emissions.
o Time Step Size: This will allow you to view the data every 5 years or every 10 years.
o Start Over: Use this to reset the model if needed.
4. The current carbon emissions are 9.8 gigatons, or 9.8 billion tons. Complete all three scenarios to find out what happens to the global temperature if these emissions stay the same, decrease, or increase over the next century. Follow the instructions in the Data section of this report.
Data
For each scenario, record the carbon dioxide emission rate and the global temperature. The data for the years 1960–2010 are already filled out for you.
Scenario One: Carbon dioxide emissions stay the same
• Set the carbon dioxide emissions rate to 9.8 gigatons.
• Set the time step size to 10 years.
• Select step forward until you have the data through the year 2110.
• Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Maintain carbon dioxide emissions at 9.8 for the rest of scenario one.
2020 9.8 58.2
2030 9.8 58.6
2040 9.8 58.9
2050 9.8 59.1
2060 9.8 59.5
2070 9.8 59.7
2080 9.8 60
2090 9.8 60.1
2100 9.8 60.5
2110 9.8 60.7
Scenario Two: Carbon dioxide emissions decrease
• Set the carbon dioxide emissions rate to 9.8 gigatons.
• Set the time step size to 10 years.
• Select the step forward button once.
• Decrease the carbon dioxide emissions by 0.2 and press step forward.
• Continue stepping forward once, decreasing the carbon emissions each time, until you reach 2110.
• Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Decrease carbon dioxide emissions by 0.2 each step forward for the rest of scenario two.
2020 9.6 58.2
2030 9.4 58.6
2040 9.2 58.9
2050 9.0 59.1
2060 8.8 59.4
2070 8.6 59.6
2080 8.4 59.8
2090 8.2 60
2100 8.0 60.1
2110 7.8 60.3
Scenario Three: Carbon dioxide emissions increase
• Set the carbon dioxide emissions rate to 9.8 gigatons.
• Set the time step size to 10 years.
• Select the step forward button once.
• Increase the carbon dioxide emissions by 0.2 and press step forward.
• Continue stepping forward once, increasing the carbon emissions each time, until you reach 2110.
• Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Increase carbon dioxide emissions by 0.2 for each step forward for the rest of scenario three.
2020 10 58.2
2030 10.2 58.7
2040 10.4 59
2050 10.6 59.2
2060 10.8 59.6
2070 11 59.9
2080 11.2 60
2090 11.4 60.4
2100 11.6 60.8
2110 11.8 61
Conclusion
Use your data to answer the following questions. Use complete sentences, and be as detailed as possible.
1. Summarize how the carbon emissions affected the atmospheric temperature in each of the three scenarios:
o Scenario One: CARBON EMISSIONS WILL STAY THE SAME BUT TEMPATURE WILL RISE.
o Scenario Two: DECREASED: If the carbon emissions go down then the temperatures will go up but slowly.
o Scenario Three: INCREASED: If the carbon emission goes up the temperatures will also go up faster.
2. Was your hypothesis supported by your results or not? Explain how you know. Yes, my hypothesis was indeed correct. The data shows that the emissions will increase, so will the temperature.
3. Explain the difference between the greenhouse effect and global warming. Global warming changes the earth by heating up. While the greenhouse effect is a natural change due to the sun.
4. Based on your knowledge of how the greenhouse effect works, why does the level of carbon dioxide affect the global temperature? The more carbon dioxide the weaker the ozone layer gets cause that's the thing that keeps us safe from all the suns heat.
5. Name three sources of atmospheric carbon dioxide. Three sources of atmospheric carbon dioxide are decomposition, ocean release, and respiration.
Explanation:
I TOOK THE SEG 1 COMPREHESIVE SCENICE CLASS. 6TH GRADE. 3.05. WORTH 40 PTS :) HOPEFULLY THIS HELPED
Carbon dioxide is an example of a
Compound
Molecule
Atom
Both a comoound and a molecule
Answer:
i think d
Explanation:
During an investigation, students dropped a tarnished penny into a solution of acetic acid and sodium chloride. Tiny bubbles formed around the penny, and the penny was less tarnished after two minutes of soaking in the acetic acid and sodium chloride solution. The student inferred that a chemical reaction occurred.
What evidence supports the student’s inference?
The penny experienced a color change, and a gas was produced.
The penny experienced a color change, and a precipitate was formed.
The penny experienced a color change and is in a new state of matter.
The penny experienced a color change and produced light.
The reaction of acetic acid and sodium chloride produce hydrogen chloride gas and sodium salt of acetic acid. Thus the penny may change its colour by the gas and the evolution of a gas can be observed. Thus option A is correct.
What is acetic acid?Acetic acid is a weak acid with the formula CH₃COOH. It is the simplest carboxylic acid or organic acid after formic acid or HCOOH. Diluted acetic acid is commonly used as vinegar.
Acetic acid reacts with basic or alkaline substances forming its salt. It can also reacts with salts such as sodium chloride producing sodium salt of acetic acid as written below:
[tex]\rm NaCl (aq) + CH_{3}COOH(aq)\rightarrow CH_{3}COONa (aq) + HCl (g)[/tex].
Hydrogen chloride gas is formed in the reaction and and its evolution can be observed during the reaction as bubbles. The penny dropped in the solution may change its color because the HCl formed will reacts with the metal and forms the hydrogen gas and metal halide.
Hence, the penny change its colour and hydrogen gas is evolved. Thus, option A is correct.
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Which word sentence represents the equation? 4y = y + 9
A. Four times a number plus 9 is 9.
B. Four times a number equals the number increased by 9.
C. Four increased by a number equals the number increased by 9.
D. Four times the sum of a number and 9 is the number
Which of these formulas contain equal numbers of oxygen atoms?
1... a, l, o, h, 3...
2... m, g, 3, p, o, 4, 2...
3... 2, a, l, 2, o, 3...
4... c, a, n, o, 3, 2...
If you would like to view the Reference Material, click here.
formulas 1 and 3
formulas 1 and 4
formulas 2 and 3
formulas 3 and 4
Describe what a moraine is made of and explain how this glacial feature forms.
Answer:
A moraine is a ridge. It is formed when till is deposited at the edge of a glacier. Till is the mixture of sediments that a glacier deposits directly on the surface. Till is made up of many particles of many different sizes.
Explanation:
On quizlet
The following are some actions that citizens can take: attending public meetings, helping neighbors after a storm, following rules at landmarks, and volunteering in the community. What would happen if a citizen does NOT perform these actions
There's no law that says you have to volunteer or help neighbors but you do have to follow rules at landmarks. But if nobody did any of these, everyone would have to do everything by themselves and nobody would work as a team to get things done. People would be really rude though if no ody did any of these things. You would also be breaking the law and would be a bad person and maybe have to pay a fine for not following the no littering or no feeding the animals rules.
Describe the effect on both the Cows (Cattle) and the Cattle Egret.
Answer:
The Cattle Egret forages in pastures and fields among livestock such as cattle and horses, feeding on the insects stirred up by the movement
Explanation:
The Cattle Egret forages in pastures and fields among livestock such as cattle and horses, feeding on the insects stirred up by the movement
Suppose you moved into a wooded neighborhood where the people are determined to get rid of black snakes. How might you explain to your new neighbors the importance of a single species to a habitat?
Answer:
If you get rid of one snake, that means it wont have children so there wont be any snakes left, its ok to get rid of a few but there is always a purpose of every living thing and if you get rid of them you could be losing a very amazing organism.
What is the density of an object with 525 grams and a volume of 15cm3?
HELP ASAP!!!!!!!!!!!!!
ITS A SCI QUESTION BTWWWWW!!!!!
Answer: 35 g/cm
Explanation:
Density equals mass over volume. 525 divided by 15 is 35
Answer:
35 g/cm
Explanation:
What are the advantages and disadvantages of renewable and nonrenewable energy resources?
Answer:
Advantages and Disadvantages of non-renewable sources are:
Explanation:
Advantage: Cheap, easy to use.
Disadvantage: Will eventually expire and is NOT replaceable.
Answer:
less reliability
difficulty transporting
costly
unlimited supply
low environmental impact
increased employment
Explanation:
for e2021 just include these words
what two things determine the potential energy of an object
Answer:
mass x gravity
Explanation:
Hope it helps
Which type of front is occurring at Point A on the map?
a
Cold Front
b
Warm Front
c
Stationary Front
d
Occluded Front
Answer: THE ANSWER IS A ) Cold Front.
Explanation: I GOT A 100 ON THE TEST
Answer these to ASAP
Answer:The answer is 3
Explanation:
I hope this helps!
PLEASE ANSWER FAST THERE IS THE PHOTO
Answer:
convergent
Explanation:
A _____________________ Graph is in the shape of a straight line,while a _______________ graph is not a straight.
Answer:
linear and nonlinear
Explanation:
Is this a chemical reaction or not? Explain why you think so (Be sure to answer both parts of the question)
Answer:
1. No 2. Yes 3. Yes
Explanation:
One is a physically. The other deals with an not reversible change
8. Which is electrically attracted to positively-charged particles in an atom?
A) neutrons
B) electrons
C) protons
D) nucleus
Answer:
Electrons
Explanation:
Since electrons have a negative charge, they would attract to the proton to cancel out the charge.
Please help me dont just use me for points
Answer:
It's B
Explanation:
A is going to evaporate more quickly causing it to push through the tube to beaker B.
Jordan is adding banana peels, egg shells and dead leaves to his garden in the backyard. Jordan is putting __________ into the pile.
A. particle size
B. crystals
C. the main ingredient in soil
D. organic matter
What is the type of matter of just one type of atoms? (G) protón (h)compound or if the right answer is not here put it in ?
Answer: I'm pretty sure it's proton
Explanation:
Unbalanced forces are what
Deanna stirred a teaspoon of sugar into a glass of warm water. The sugar completely dissolved in the water. Check any statement that is TRUE about the dissolved sugar.
(A) The sugar melts.
(B) The sugar loses mass.
(C) The sugar turns into water molecules.
(D) The sugar forms a mixture with the water.
(E) The sugar can be separated from the water.
(F) The sugar disappears and no longer exists.
(G) The sugar molecules are spread among the water molecules.
(H) The sugar breaks down into the individual atoms that make up sugar.
(I) The sugar chemically combines with the water to form a new substance.
Answer:
D
Explanation:
From my experience this is what happens when I put sugar in warm water glass
Deanna stirred a teaspoon of sugar into a glass of warm water. The sugar completely dissolved in the water. The statement that is true about the dissolved sugar is the sugar forms a mixture with the water. Therefore, option D is correct.
What do you mean by solubility ?The term solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature.
Temperature, pressure, polarity, and molecular size are all factors that influence solubility. For most solids dissolved in liquid water, solubility increases with temperature. This is due to increased vibration or kinetic energy of the solute molecules at higher temperatures.
Water is known as the "universal solvent" because it dissolves more substances than any other liquid. This is critical for all living things on the planet.
Thus, the dissolved sugar is the sugar forms a mixture with the water, option D is correct.
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