QUESTION IMAGE
Question
after running the experiment, mrs. buck collected these data:
| sunny shady | |
| average length of 100 popples | 8.4 inches 15.8 inches |
how would you interpret these results?
would you accept or reject your hypothesis?
disseminating findings
how do scientists get their findings out into the public?
theory:
what are some scientific theories that you know of?
natural law:
theories without exceptions
first law of thermodynamics:
example:
second law of thermodynamics:
example:
do the math (p 13): range of electric vehicles
show your work. include units on all numbers
Interpreting the results:
The data shows the average length of 100 popples (assuming a typo, maybe "poplars" or another plant) is 8.4 inches in sunny conditions and 15.8 inches in shady conditions. This suggests that the plants grow longer on average in shady environments compared to sunny ones. If the hypothesis was, for example, that plants grow better (longer) in sunny conditions, this data would contradict that. If the hypothesis was that shade promotes longer growth, the data supports it.
Accept or reject hypothesis:
To determine this, we need to know the original hypothesis. Assuming a common hypothesis like "Plants grow longer in sunny conditions", since 15.8 (shady) > 8.4 (sunny), we would reject that hypothesis. If the hypothesis was "Shade leads to longer plant growth", we would accept it.
Disseminating findings:
Scientists disseminate findings through:
- Publishing in peer - reviewed scientific journals.
- Presenting at conferences (national and international).
- Posting pre - prints on platforms like arXiv (for some fields).
- Sharing through university or research institution press releases.
- Using social media and science communication blogs (to reach a broader audience).
Scientific theories:
- Cell Theory: All living organisms are composed of one or more cells, and the cell is the basic unit of structure and function in living things, and all cells come from pre - existing cells.
- Theory of Evolution by Natural Selection: Organisms that are more adapted to their environment are more likely to survive and pass on their genes. Over time, this leads to the evolution of species.
- Atomic Theory: Matter is composed of atoms, which are the basic building blocks of matter. Atoms have a specific structure (nucleus with protons and neutrons, electrons in orbitals around the nucleus).
Natural law (Theories without exceptions):
- First law of thermodynamics: Also known as the law of conservation of energy. The change in internal energy ($\Delta U$) of a system is equal to the heat ($Q$) added to the system minus the work ($W$) done by the system, or $\Delta U=Q - W$. Energy cannot be created or destroyed, only transferred or transformed. For example, in a car engine, chemical energy in fuel is converted into mechanical energy (to move the car) and heat energy (lost to the environment).
- Second law of thermodynamics: The total entropy of an isolated system can never decrease over time. Entropy is a measure of disorder. For example, when you drop a glass and it breaks, the disorder (entropy) of the system (glass + surroundings) increases, and you can't spontaneously put the broken glass back together without inputting energy from an external source.
Do the Math (Range of Electric Vehicles) - Since the specific problem about the range of electric vehicles is not fully presented (no data like battery capacity, energy consumption rate etc.), here is a general approach:
Step 1: Identify the relevant formula
The range ($R$) of an electric vehicle can be calculated using the formula $R=\frac{E}{C}$, where $E$ is the total energy stored in the battery (in watt - hours or joules) and $C$ is the energy consumption rate of the vehicle (in watt - hours per mile or joules per kilometer).
Step 2: Plug in the values
Suppose the battery has an energy capacity $E = 60\space kWh=60000\space Wh$ and the vehicle consumes energy at a rate $C = 300\space Wh/mile$. Then $R=\frac{60000\space Wh}{300\space Wh/mile}=200\space miles$.
(Note: Since the original problem's "Do the Math" section doe…
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Interpreting the results:
The data shows the average length of 100 popples (assuming a typo, maybe "poplars" or another plant) is 8.4 inches in sunny conditions and 15.8 inches in shady conditions. This suggests that the plants grow longer on average in shady environments compared to sunny ones. If the hypothesis was, for example, that plants grow better (longer) in sunny conditions, this data would contradict that. If the hypothesis was that shade promotes longer growth, the data supports it.
Accept or reject hypothesis:
To determine this, we need to know the original hypothesis. Assuming a common hypothesis like "Plants grow longer in sunny conditions", since 15.8 (shady) > 8.4 (sunny), we would reject that hypothesis. If the hypothesis was "Shade leads to longer plant growth", we would accept it.
Disseminating findings:
Scientists disseminate findings through:
- Publishing in peer - reviewed scientific journals.
- Presenting at conferences (national and international).
- Posting pre - prints on platforms like arXiv (for some fields).
- Sharing through university or research institution press releases.
- Using social media and science communication blogs (to reach a broader audience).
Scientific theories:
- Cell Theory: All living organisms are composed of one or more cells, and the cell is the basic unit of structure and function in living things, and all cells come from pre - existing cells.
- Theory of Evolution by Natural Selection: Organisms that are more adapted to their environment are more likely to survive and pass on their genes. Over time, this leads to the evolution of species.
- Atomic Theory: Matter is composed of atoms, which are the basic building blocks of matter. Atoms have a specific structure (nucleus with protons and neutrons, electrons in orbitals around the nucleus).
Natural law (Theories without exceptions):
- First law of thermodynamics: Also known as the law of conservation of energy. The change in internal energy ($\Delta U$) of a system is equal to the heat ($Q$) added to the system minus the work ($W$) done by the system, or $\Delta U=Q - W$. Energy cannot be created or destroyed, only transferred or transformed. For example, in a car engine, chemical energy in fuel is converted into mechanical energy (to move the car) and heat energy (lost to the environment).
- Second law of thermodynamics: The total entropy of an isolated system can never decrease over time. Entropy is a measure of disorder. For example, when you drop a glass and it breaks, the disorder (entropy) of the system (glass + surroundings) increases, and you can't spontaneously put the broken glass back together without inputting energy from an external source.
Do the Math (Range of Electric Vehicles) - Since the specific problem about the range of electric vehicles is not fully presented (no data like battery capacity, energy consumption rate etc.), here is a general approach:
Step 1: Identify the relevant formula
The range ($R$) of an electric vehicle can be calculated using the formula $R=\frac{E}{C}$, where $E$ is the total energy stored in the battery (in watt - hours or joules) and $C$ is the energy consumption rate of the vehicle (in watt - hours per mile or joules per kilometer).
Step 2: Plug in the values
Suppose the battery has an energy capacity $E = 60\space kWh=60000\space Wh$ and the vehicle consumes energy at a rate $C = 300\space Wh/mile$. Then $R=\frac{60000\space Wh}{300\space Wh/mile}=200\space miles$.
(Note: Since the original problem's "Do the Math" section doesn't have the necessary data, this is a sample calculation to show the method. If you provide the data like battery capacity, energy consumption, etc., we can do the exact calculation.)