Lab Report

 

Problem Statements:


1.What will occur to the daphnia's heartbeat when it's placed in the cold water temperature?
2.What will occur to the daphnia's heartbeat when it's placed in the super cold water temperature?

 

Method and Materials:

-Scuba Equipment
-Video Microscope
-Microscope
-Computer
-Daphnia
-Depression Slide (indented)
-Beaker
-Thermometer
-Cotton Balls
-Eye Dropper
-Paper Towel
-Water
-Stop Watch
-Ice

 

 

First we take three beakers. The first one will be our control temperature, which we will keep the Daphnia in. the second one will be our cold water (12 degrees Celsius), and the third will be our super cold water (3 degrees Celsius). We will take a daphnia and put it on a depression slide and add two drops of control water. We then will put it on a video microscope and count the amount of heartbeats in a minute. Then we will do the same method with two drops of the other two water temperatures. After we finished this, we conducted the same method with two other Daphnia so we could average the results.



We took a sample from each beaker of water, put in the slide where the daphnia was, and watched the daphnia's heart rate under the video microscope.

 

 


Hypothesis':


1. We think that there will be a slight change in the daphnia's heartbeat compared to the control once placed in the cold water temperature.
2. We think that there will be a greater change than the cold and control water temperature for the super cold water temperature.

 

Results:

 

Conclusions:

When the dapnia was placed in the cold water temperature there was a slow in beats per minute by 50.

When the daphnia was placed in the super cold water temperature there was a slow in beats per minute compared to the control by 150 and compared to the cold water temperature it was 150.


 

 Background Info

Lab Report

 Analytic Essay

 Results

 Diagram

 St. Matthew's Deep Page

 Photographs

Links

Animations

 Enhancements

 Bibliography

Title Page 

Background from www.geocities.com/Heartland/Valley/2165/backgrounds-2.htm