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PHY MISC Lab 04 –Latest updated
version with 100% accuracy-South
college
Materials Needed:
Thermometer, human thermometer (you!), fan or other source of blowing
air, 1 glass container (glass cup), 2 foam cups, oven mitt, electric kettle or
access to boiling water, kitchen scale, small plastic, waterproof bag (ziploc
bag), microwave
Course Objectives:
1.Define and interpret heat transfer mechanisms.
Topic: Calorimetry
Activity #1: Temperature
Many people consider themselves to be excellent judges of temperature.
“It’s cold outside” is something I’m sure we have all heard, but in physics
we like to be fairly precise. A fair question to the person making the
statement above might be, “what’s the temperature?”. Most people that
have not looked at the weather station recently would likely get it wrong!
The reason being that most people are only able to accurately measure a
“real feel” measurement of temperature. Given all the variables in
weather, that can be quite far from the actual temperature! For example,
imagine the weather is a perfect 25C and you are laying on the beach
getting a tan. You might start to sweat and think that there is something
wrong with your internal body temperature. Likely, you are just
experiencing a higher “heat index” than the actual temperature states. The
National Weather service does a great job of explaining heat index.
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For cold temperatures, there is a similar concept called windchill, meaning
it feels colder than it actually is.
Let’s try a few quick experiments to fine tune what we mean by
temperature. First a cautionary note, DO NOT get too close to any boiling
water! If you are ever unsure if the water you are experimenting with is
too hot, test it by sticking a pen or something similar into the water, draw it
out, and see if the object you placed in the water is very hot.
Mini-experiment #1:
1. Begin by getting a warm foam cup of water, it doesn’t have to be
TOO HOT, and one cold cup of water. Quickly pour ½ of each cup
into a third, empty cup, to make room mild temperature cup. Place
one index finger in the warm water, and one in the cold water. After
30 seconds, take each finger out, and put them BOTH in the mild
temperature cup. Describe below what you experienced in your
fingers throughout the mini experiment.
The finger that was in the warm cup of water felt like the 3rd mixed cup of
water was much colder than the finger that was in the cold cup of water.
You may have found that despite your fingers belonging to the same
person, YOU, they experienced vastly different temperatures when placed
in water of a single moderate temperature cup. So are humans good
thermometers? Not likely, but let’s try one more!
Mini-experiment #2:
2. This time we will only use the moderate temperature cup and a fan.
Put your two index fingers in the cup. After 30 seconds, remove
them both, and then quickly place one finger in front of a fan or other
source of blowing air, and leave one well away from any source of
blowing air. Below write down what you notice about the
For more exams
Email;
Email;
PHY MISC Lab 04 –Latest updated
version with 100% accuracy-South
college
Materials Needed:
Thermometer, human thermometer (you!), fan or other source of blowing
air, 1 glass container (glass cup), 2 foam cups, oven mitt, electric kettle or
access to boiling water, kitchen scale, small plastic, waterproof bag (ziploc
bag), microwave
Course Objectives:
1.Define and interpret heat transfer mechanisms.
Topic: Calorimetry
Activity #1: Temperature
Many people consider themselves to be excellent judges of temperature.
“It’s cold outside” is something I’m sure we have all heard, but in physics
we like to be fairly precise. A fair question to the person making the
statement above might be, “what’s the temperature?”. Most people that
have not looked at the weather station recently would likely get it wrong!
The reason being that most people are only able to accurately measure a
“real feel” measurement of temperature. Given all the variables in
weather, that can be quite far from the actual temperature! For example,
imagine the weather is a perfect 25C and you are laying on the beach
getting a tan. You might start to sweat and think that there is something
wrong with your internal body temperature. Likely, you are just
experiencing a higher “heat index” than the actual temperature states. The
National Weather service does a great job of explaining heat index.
For more exams
Email;
, For more exams
Email;
For cold temperatures, there is a similar concept called windchill, meaning
it feels colder than it actually is.
Let’s try a few quick experiments to fine tune what we mean by
temperature. First a cautionary note, DO NOT get too close to any boiling
water! If you are ever unsure if the water you are experimenting with is
too hot, test it by sticking a pen or something similar into the water, draw it
out, and see if the object you placed in the water is very hot.
Mini-experiment #1:
1. Begin by getting a warm foam cup of water, it doesn’t have to be
TOO HOT, and one cold cup of water. Quickly pour ½ of each cup
into a third, empty cup, to make room mild temperature cup. Place
one index finger in the warm water, and one in the cold water. After
30 seconds, take each finger out, and put them BOTH in the mild
temperature cup. Describe below what you experienced in your
fingers throughout the mini experiment.
The finger that was in the warm cup of water felt like the 3rd mixed cup of
water was much colder than the finger that was in the cold cup of water.
You may have found that despite your fingers belonging to the same
person, YOU, they experienced vastly different temperatures when placed
in water of a single moderate temperature cup. So are humans good
thermometers? Not likely, but let’s try one more!
Mini-experiment #2:
2. This time we will only use the moderate temperature cup and a fan.
Put your two index fingers in the cup. After 30 seconds, remove
them both, and then quickly place one finger in front of a fan or other
source of blowing air, and leave one well away from any source of
blowing air. Below write down what you notice about the
For more exams
Email;
