Blood Spatter: How to Make Spatter
Summary
TLDRThis educational video demonstrates a blood spatter experiment using PPE, including safety glasses, lab coats, and covered shoes. The process involves taping paper to prevent movement, creating blood spatter with 'vampire blood' and a pipette, and collecting data by dropping at various heights. One partner drops the blood while the other records the results. The video guides viewers on how to properly mark and measure the spatter, and suggests letting it dry before analysis. For those unable to perform the experiment, a link to a Google Doc with pre-collected data is provided. The video concludes with a teaser for the next part, which will cover measurement, graphing, and interpretation of blood spatter.
Takeaways
- 👓 The video discusses Personal Protective Equipment (PPE), including safety glasses, lab coats, and toe-covered shoes.
- 🔬 They use paper taped down to prevent it from moving during the experiment.
- 🧪 'Vampire blood' is mentioned as a substance for creating blood spatter in the experiment.
- 💧 A container and pipette are used to create droplets for the blood spatter.
- 📏 The height of the droplets is measured using a meter stick.
- 🔍 One partner is responsible for creating the droplets while the other records the data.
- 📝 There is a focus on achieving good, non-overlapping droplets for accurate data collection.
- 🎯 The script mentions the importance of marking and recording the height of the droplets accurately.
- ⏱️ The blood spatter needs to dry for a few hours or overnight before measurements are taken.
- 🔗 A Google Doc link is provided in the video description for those who cannot perform the experiment, containing real blood spatter data.
- 📈 The video series will continue with instructions on how to measure, graph, and interpret the blood spatter data in a subsequent video.
Q & A
What personal protective equipment (PPE) is mentioned in the script?
-The PPE mentioned includes safety glasses, lab coats, and toe-covered shoes.
Why is paper taped down in the experiment?
-The paper is taped down to prevent it from blowing away during the blood spatter experiment.
What is used to simulate blood for the blood spatter experiment?
-Vampire blood is used to simulate real blood for the blood spatter experiment.
What tools are used to create the blood droplets?
-A container and a pipette are used to create the blood droplets for the experiment.
What is the initial height at which the blood droplets are dropped in the experiment?
-The initial height at which the blood droplets are dropped is 20 centimeters.
Why is it important to avoid getting blood on the meter stick?
-It is important to avoid getting blood on the meter stick to ensure accurate measurements and to prevent contamination of the experiment.
What is the process for marking and recording the blood spatter on the paper?
-One partner drops the blood while the other records the height and marks the paper where the droplets land.
Why is it necessary to let the blood spatter dry before measuring?
-The blood spatter needs to dry before measuring to ensure accurate measurements and to prevent smudging or distortion of the spatter pattern.
How long is recommended for the blood spatter to dry?
-It is recommended to let the blood spatter dry for at least a few hours, or overnight for best results.
What resource is provided for those who cannot perform the blood spatter experiment themselves?
-A link to a Google Doc with pre-recorded blood spatter data is provided for those who cannot perform the experiment.
What will the next video cover after this one?
-The next video will explain how to measure, graph, and interpret the blood spatter data.
Outlines
🔬 Blood Spatter Experiment Setup
The video script describes a procedure for a blood spatter experiment, emphasizing the importance of personal protective equipment (PPE) such as safety glasses, lab coats, and covered shoes. Participants are instructed to secure paper to prevent movement and use a substance referred to as 'vampire blood' to simulate blood for the experiment. A container and pipette are utilized to create droplets of the substance. The process involves one partner dropping the substance from a specific height while the other records the results on paper. The script details the technique of dropping the substance without it touching the pipette and ensuring clear, non-overlapping droplets for accurate data collection. The height of the drops is recorded, and the paper is marked accordingly. The video concludes with a reminder to allow the blood spatter to dry before measurement and offers an alternative for those unable to conduct the experiment by providing a link to a Google Doc with pre-recorded blood spatter data.
Mindmap
Keywords
💡PPE
💡Safety Glasses
💡Lab Coat
💡Toe-Covered Shoes
💡Vampire Blood
💡Blood Spatter
💡Container and Pipette
💡Droplets
💡Height
💡Measurement
💡Data Collection
💡Graphing
Highlights
Introduction of Personal Protective Equipment (PPE) including safety glasses, lab coats, and toe-covered shoes.
Use of paper taping to prevent movement during the experiment.
Innovative use of 'vampire blood' as a substitute for real blood in spatter experiments.
Utilization of a container and pipette for blood spatter droplet collection.
Collaborative data collection process with one partner dropping and the other recording.
Methodology of holding the pipette near the meter stick without contaminating it.
Procedure for collecting blood spatter droplets at specific heights.
Important note on avoiding air bubbles in the blood spatter droplets.
Marking the paper with successful droplet heights and recording the data.
Instruction on how to label and mark the blood spatter for analysis.
Recommendation to let the blood spatter dry for accurate measurement.
Suggestion to dry the spatter overnight for best results.
Provision of a Google Doc link for those unable to perform the experiment themselves.
Offering a second video tutorial on how to measure, graph, and interpret blood spatter.
Completion of the blood spatter collection with 20 labeled droplets.
Encouragement for viewers to watch the next video for further analysis instructions.
Transcripts
we're gonna tell you about our PPE we
have safety glasses and lab coat and toe
covered shoes we tape down the paper so
it won't blow away and we use vampire
blood for blood spatter and we use a
container and a pipette right now these
girls are gonna start collecting some
data so one partner will be doing the
droplets while the other partner records
on the paper hold that over about me
while you Taylor okay okay so we're
starting with some low droplets Lilly
what height are yet 2020 and that one
has an air bubble so let's try another
20 so you want to hold your pipette near
your meter stick where you but not so
close that it gets blood all over it
like this one sometimes has oh there we
got a good one but it overlapped so
let's move it over let's try another 20
and when we get a really good 20 then
Taylor's gonna mark the paper nice that
was a great 20 so Taylor get down there
and Mark the paper
and Taylor's gonna record the height
excellent now try a different height
with one of those a good 40 the bigger
ones the smaller one was a good 40 mm
because that one's good
okay now Taylor maybe draw an arrow to
the one she thinks is a good one I think
it's the in-between yes
okay
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okay now we have 20 labeled droplets of
blood splatter I think we're ready for
the next part of the lab so you will
have to let your blood spatter dry a bit
before you measure it at least a few
hours overnight is awesome and if you
can't do this blood spatter experiment
yourself then go to the description of
this video and you will see a link to a
Google Doc of some blood spatter we did
will you flip it around there Taylor
alright there we go so you'll see a link
to a Google Doc with some real blood
spatter that you can measure and analyze
and the second video after this one will
tell you exactly how to measure it and
graph it and interpret unknown blood
spatter thanks for watching
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