Washer Thermal Energy Lab
Summary
TLDRIn the washer heat flow lab, the experiment explores the impact of mass on heat flow. Two setups are conducted: one with two and six washers, and another with four washers each. A hot plate heats the washers, and water temperatures are measured before and after immersion. The first experiment uses equal water volumes, while the second varies the water amount. The lab is designed to be simple, engaging for students, and effective in demonstrating the principles of heat transfer.
Takeaways
- 🔬 The lab experiment focuses on observing how mass affects heat flow.
- 🧪 Two separate experiments are conducted: one with two and six washers, and another with four washers in each setup.
- ⚠️ It's advised to use a more durable string for tying washers to avoid untying issues.
- 📏 The washers are spaced out on a pencil to ensure they don't touch the bottom of the beaker.
- 🌡️ A hot plate is used to heat the washers, set at 250 degrees Fahrenheit.
- 📝 The experiment involves labeling the beakers according to the washers' quantity they contain.
- 💧 In the first experiment, equal amounts of water (100 milliliters) are used for both systems.
- 📉 The initial and final temperatures of the water are recorded after placing the washers.
- 🔄 For the second experiment, different amounts of water are used while keeping the number of washers constant.
- 📊 Results are compared to analyze the impact of mass on heat flow in the systems.
- 📚 The lab is designed to be simple to set up and conduct, making it an effective educational tool.
Q & A
What is the main objective of the washer heat flow lab?
-The main objective of the washer heat flow lab is to observe how mass affects heat flow.
How many different experiments are set up in the lab?
-Two different experiments are set up in the lab.
What is the difference between the two experiments in terms of washers used?
-In the first experiment, two and six washers are used, while in the second experiment, four washers are used for both systems.
What type of string is used in the video, and why is it not recommended?
-Shiny pink string is used in the video, but it is not recommended because it unties very easily.
What is the recommended alternative to the string used in the video?
-A different type of string that is a little more rough is recommended, as it helps the knots stay in place more easily.
How are the washers arranged in the experiment?
-The washers are tied to a pencil with a little bit of space in between each washer.
What is the purpose of not letting the washers touch the bottom of the beaker?
-The washers are not allowed to touch the bottom of the beaker to prevent tangling when multiple groups are heated at once.
What is the initial temperature of the water in both systems during the first experiment?
-The initial temperature of the water in both systems is not specified in the script, but it is measured before placing the washers.
How does the amount of water in the systems differ between the first and second experiments?
-In the first experiment, the same amount of water (100 milliliters) is used in each system, while in the second experiment, different amounts of water (50 milliliters and 200 milliliters) are used.
What is the purpose of comparing the final temperatures in the experiments?
-The purpose of comparing the final temperatures is to analyze how the mass of the washers affects the heat flow and the temperature change in the water.
Who is the target audience for this lab, and why is it a good choice for them?
-The target audience for this lab is students. It is a good choice for them because it is easy to set up and conduct, and it provides a practical way to discuss the concept of how mass affects heat flow.
Outlines
🔬 Washer Heat Flow Lab Setup
The video script describes a scientific experiment conducted in the washer heat flow lab. The main objective is to investigate the impact of mass on heat flow. Two distinct experiments are planned: one using two and six washers, and the other using four washers in two separate setups. The narrator advises against using shiny pink string due to its tendency to untie easily, suggesting a rougher alternative for better knot retention. The setup involves tying groups of washers to a pencil with some space between them, which is demonstrated in the video. The washers are then heated using a hot plate set at 250 degrees, with separate beakers labeled for different washer configurations. The washers are suspended in the water to prevent them from touching the bottom, allowing for efficient multitasking. The first experiment compares the final temperatures when the same amount of water (100 milliliters) is used with different numbers of washers (two versus six). The second experiment varies the water volume (50 milliliters versus 200 milliliters) while keeping the number of washers constant (four in each system). The initial and final temperatures of the water are recorded to analyze how mass influences heat flow.
Mindmap
Keywords
💡Washer
💡Heat flow
💡Experiment
💡Mass
💡Hot plate
💡Beaker
💡Temperature
💡Pencil
💡String
💡Milliliters
💡Initial temperature
💡Final temperature
Highlights
Objective of the washer heat flow lab is to study the effect of mass on heat flow.
Two different experiments are set up: one with two and six washers, and another with four washers.
Shiny pink string is used but not recommended due to its tendency to untie easily.
A rougher type of string is suggested for better knot retention.
Experiment setup involves tying washers to a pencil with space in between.
Two sets of four washers are prepared for the second experiment.
A beaker is used to heat the washers on a hot plate set at 250 degrees.
Labeling is important for differentiating between washer groups in the experiment.
Washers should not touch the bottom of the beaker to prevent tangling.
System one and system two are filled with 100 milliliters of water for the first experiment.
Initial temperature of the water is taken before placing washers.
Two washers are placed in one system, and six in the other to observe heat flow differences.
For the second experiment, different amounts of water are used: 50 milliliters in system one and 200 milliliters in system two.
The initial temperature of the water is recorded before adding the washers.
A set of four washers is placed into each system to compare temperature changes.
Final temperature is recorded after a couple of minutes to assess heat flow.
The lab setup is easy and suitable for student participation.
The experiment serves as an educational tool to discuss mass's impact on heat flow.
Transcripts
foreign
[Music]
this is the washer heat flow lab where
the objective is to see how Mass affects
heat flow we're going to set up two
different experiments the first one uses
two and six washers and the second one
uses four washers for both systems
and even though I'm using this kind of
shiny pink string for the video I
wouldn't recommend using it because I
found out that it unties very easily so
if you use a different type of string
that's a little more rough the knots
actually stay in it easier
so it's pretty easy to set up you just
tie each group of washers to the pencil
with a little bit of space in between
them as you'll see here in the video
and then just repeat that for the two
sets of four washers each
so now we need to heat up the washers
just put a beaker on a hot plate I set
it at 250 here and label it as two
washers and six and the other one has
four and four washers
and I like to tie the strings so that
the washers aren't touching the bottom
that way if I have a lot of groups that
I want to do at once I can put them all
in a row and they don't get tangled as
easily
for the first experiment we're going to
use the same amount of water in each of
the two systems so system one and system
2 have 100 milliliters of water take the
initial temperature and then place two
washers in one system and six in the
other and see how that affects the final
temperature for the second experiment
we're going to use different amounts of
water but the same number of washers to
see how the temperature changes we'll
fill system one with 50 milliliters of
water and system 2 with 200 milliliters
of water just like before record the
initial temperature of the water then
take the set of four washers and place
them each into two different systems
after a couple minutes record the final
temperature and then compare the results
this is a very easy lab to set up and
pretty easy for students to do and a
great way to discuss how Mass affects
heat flow in different systems
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