Water Lab Report Hl Bio Ib Essay Example
Water lab
Research Question:
How many drops of water can fit on a coin?
(Water properties involved are cohesion and surface tension. Cohesion plays a consequential role in the transport of water within plants specifically within the phloem. Surface tension also dictates an important role within the transpirational pull of the xylem.)
Variables: Variables | Type of Variable | How it was manipulated | Independent | Water drops, different types of water | Determining how many drops of the different types of water would fit onto the coin. | Dependent | Water drops | The amount of water drops that would fit on the penny was being recorded. | Controlled | Coin | The same coin was used throughout the experiment. |
Apparatus:
1) Coin
2) Eye dropper/ pipette
3) Styrofoam cup
4) Paper towels
5) Thermometer
6) Room temperature tap water
7) Boiling temperature tap water
8) Freezing temperature tap water
9) Distilled water
10) Salt water
Method:
Step 1: Rinse the coin in tap water and dry completely.
Step 2: Place the coin on a paper towel.
Step 3: Fill a pipette with the first form of water (room temperature) preferably and practice carefully dropping one drop at a time into the Styrofoam cup.
Step 4: Hold the pipette vertically above the coin by around one centimeter.
Step 5: Make sure to keep your hand steady, any movement will affect the data.
Step 6: Place as any drops onto the coin as possible until the water spills over.
Step 7: Repeat four more times.
Step 8: Record data and find the average number of drops that fit onto the coin.
Step 9: Repeat process but with another form of water.
Gathered Data:
Room temperature tap water Test 1 | Test 2 | Test 3 | Test 4 | Test 5 | Average | 18.0 drops | 15.0 drops | 21.0 drops | 16.0 drops | 22.0 drops | 18.4 drops |
Boiling temperature tap water Test 1 | Test 2 | Test 3 | Test 4 | Test 5 | Average | 12.0 drops | 11.0 drops | 15.0 drops | 14.0 drops | 18.0 drops | 14.0
Research Question:
How many drops of water can fit on a coin?
(Water properties involved are cohesion and surface tension. Cohesion plays a consequential role in the transport of water within plants specifically within the phloem. Surface tension also dictates an important role within the transpirational pull of the xylem.)
Variables: Variables | Type of Variable | How it was manipulated | Independent | Water drops, different types of water | Determining how many drops of the different types of water would fit onto the coin. | Dependent | Water drops | The amount of water drops that would fit on the penny was being recorded. | Controlled | Coin | The same coin was used throughout the experiment. |
Apparatus:
1) Coin
2) Eye dropper/ pipette
3) Styrofoam cup
4) Paper towels
5) Thermometer
6) Room temperature tap water
7) Boiling temperature tap water
8) Freezing temperature tap water
9) Distilled water
10) Salt water
Method:
Step 1: Rinse the coin in tap water and dry completely.
Step 2: Place the coin on a paper towel.
Step 3: Fill a pipette with the first form of water (room temperature) preferably and practice carefully dropping one drop at a time into the Styrofoam cup.
Step 4: Hold the pipette vertically above the coin by around one centimeter.
Step 5: Make sure to keep your hand steady, any movement will affect the data.
Step 6: Place as any drops onto the coin as possible until the water spills over.
Step 7: Repeat four more times.
Step 8: Record data and find the average number of drops that fit onto the coin.
Step 9: Repeat process but with another form of water.
Gathered Data:
Room temperature tap water Test 1 | Test 2 | Test 3 | Test 4 | Test 5 | Average | 18.0 drops | 15.0 drops | 21.0 drops | 16.0 drops | 22.0 drops | 18.4 drops |
Boiling temperature tap water Test 1 | Test 2 | Test 3 | Test 4 | Test 5 | Average | 12.0 drops | 11.0 drops | 15.0 drops | 14.0 drops | 18.0 drops | 14.0