Written Lab Homework Answer Page

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Page 115:
Hypothesis: The Zing tomatoes aer better adapted to growing in in a warmer climate than the Berry Red tomatoes which grow better in a colder climate.
Factor to be varied: The climate in which the tomatoes grow.
Two factors to be held constant:

1. Amount of Sunlight
   
2. Amount of Water

1. Grow Zing and Berry Red tomatoes in a cold climate.
   
2. Provide each plant with equal amounts of fertilizer, soil, sunlight and water.
   
3. Check and record the number of tomatoes produced by each plant.
   
4. Grow Zing and Berry Red tomatoes in a warm climate.
   
5. Provide each plant with equal amounts of fertilizer, soil, sunlight and water as given in step 2.
   
6. Check and record the number of tomatoes produced by each plant.
   
7. Draw a conclusion based on your data.

Page116:
Hypothesis:Cocoons will develop faster if they are kept warmer.
Factor to be varied: The temperature at which cocoons are kept.
Two factors to be held constant:

1. Food given to the catillars.
   
2. The species of catipillar.

1. Contain two sample groups of catipillars. Both groups are of the same species.
   
2. Place each of the groups in identical observation boxes.
   
3. Provide the same amount of food to each sample group.
   
4. Group A will be placed in a wamer climate than Group B.
   
5. Record the time it takes for the cocoons from Group A and Group B to develop.
   
6. Record your data in the data table.
   
7. Draw a conclusion based on your results.

Page 117:
Hypothesis: Fertilizer "Type 1" would be the best fetilizer to use in a garden.
Factor to be varied: The three types of fertilizer.
Two (four in this case) factors to be held constant:

1. Amount of sunlight
   
2. Amount of fertilizer given to each plant.
   
3. Type of plant grown in the garden.
   
4. Amount of water given to each plant.

Procedure:

1. Prepare four different flower beds. All with equal amounts of daylight.
   
2. Plant identical flowers in each flower bed.
   
3. Give Plant Bed A 50ml of fertilizer "type 1", Give Plant Bed B 50ml of fertilizer "type 2", Give Plant Bed C 50ml of fertilizer "type 3", do not give Give Plant Bed B any fertilizer.
   
4. Water all plants equally.
   
5. Repeat aplying fertilizer every other day to all plants.
   
6. Record the height the plants grow on Days 1-16.
   
7. Make a graph of your results.
   
8. Use your data table and your graph to support your hypothesis or make a new hypothesis.

1. Plants in the terrarium
   
2. Loaction of terrarium.

1. Obtain two identical terrariums.
   
2. Place the same types of plants in each terrarium.
   
3. Feed the plants in each terrarium the same amount of water and food.
   
4. Place a small animal in one terrarium.
   
5. Record your observation of each terrarium.
   
6. Every fifth day reord new observations in your terrarium.
   
7. Draw a conclusion based on your results.

1. Pond
   
2. Life inside the pond

1. Obtain two small identical pond structures.
   
2. Both ponds are to recieve identical amounts of water, daylight, plants and animals.
   
3. Pond A is to recieve fertilizer identical to that found on the golf course.
   
4. Pond B is not to receive any fetilizer.
   
5. Watch for growth of algae in either pond.
   
6. Record all result in your data table.
   
7. Draw a conclusion based on your results.

1. Time of day
   
2. Location

1. Obtain a pole which is Five feet tall.
   
2. Every day for one year measure the shadow cast by the pole at 11:30am.
   
3. Record the length of the shadow in your data table.
   
4. Draw a conclusion based on your results

1. The amount of water/sand. (Equal mass)
   
2. The time the water/sand are exposed to energy.

1. Obtain 200g of water and sand in a glass beaker.
   
2. Place each of the beakers on a hot plate.
   
3. After five minutes records the temperature of each.
   
4. The higher the temperature of the object the less energy required to heat.

This next one is for fun Page 122:
Hypothesis: The salt in water makes objects lighter than in a swimming pool. (the object should weigh less in the salt water than in the pool water.)
Factor to be varied: salt water vs. pool water.
Two factors to be held constant:

1. Object immersed in water.
   
2. Amount of water

1. Obtain two 15ft round swimming pools.
   
2. Fill pool A to the top with chlorinated water.
   
3. Fill pool B to the top with salt water.
   
4. Weigh yourself in pool A and in pool B.
   
5. Recoed your results.
   
6. If you weigh less in pool A then change your hypothesis. If you weigh less in pool B then you are correct. You pass with an "A" in science. (Oh wait...I already did the grades..sorry)

1. The time of day going out into the sun.
   
2. The size of the lenses.

1. At noon go out side and face south with sunglass A.
   
2. Make observations based on the amount of sunlight passing through the lenses.
   
3. At noon go out side and face south with sunglass B.
   
4. Make observations based on the amount of sunlight passing through the lenses.
   
5. At noon go out side and face south with sunglass C.
   
6. Make observations based on the amount of sunlight passing through the lenses.
   
   
7. Draw a conclusion based on you results.

1. Type of bicycle.
   
2. Path of "coast."

1. Obtain three sets of tires made by the same company. Each tire must have a different degree of smoothness.
   
2. Go to smathers hill and coast down to the bottom.
   
3. Record how far and to what degree the bicycle coasted.
   
4. Change the tires and coast down smathers hill again.
   
5. Record how far to to what degree the bicycle coasted.
   
6. Change the tires one last time and coast down smathers hill again.
   
7. Record how far to to what degree the bicycle coasted.
   
8. Draw a conclusion based on your results.

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