## Problem

Will the color black placed in front of a light affect the transpiration of the leaf in the experiment?

## Hypothesis

If a black cover is placed in front of a light then it will make the transpiration process slower.

Time

Light

Water

Leaf

Water

Syringe

Light

Black Cover

## Manipulated Variable Procedure

Using the black covers we will be able to determine whether the color will effect the transpiration of the leaf.

## Observation

During this lab we observed that it took about three minutes for a change to be evident in the experiment. Once the initial change started to occur it became evident that the slight shade we had manipulated was affecting the transpiration that was occurring.

## Data

MV: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10

Cold Water: 3.75 - 3.5 - 3.5 - 3.5 - 3.45 - 3.45 - 3.25 - 3.15 - 3 - 3

Apple Juice: 5.5 - 5.46 - 5.46 - 5.45 - 5.45 - 5.43 - 5.41 - 5.41 - 5.4 - 5.4

Ammonia: 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8 - 4.8

Sugar: 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2 - 6.2

Light: 1.2 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1

Shade: 5.2 - 5.2 - 5.1 - 4.9 - 4.8 - 4.8 - 4.8 - 4.7 - 4.7 - 4.5

Control: 2.8 - 2.8 - 2.7 - 2.7 - 2.6 - 2.5 - 2.3 - 2.3 - 2.2 - 2

Area of Leaf: 678

Transpiration Rate:

Cold Water: 1.22 x 10e-4

Apple Juice: 1.40 x 10e-9

Ammonia: 0

Sugar: 0

Light: 5.3 x 10e-6