1. the plants require sunlight to photosynthesize properly.
2. long plants should be kept in the dark.
3. color is a poor indicator of plant health.
4. green coloration indicates simple sugar production.

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Use the following information to answer questions # 26 - 27.

Samantha wanted to find out which soil types would best suit her herb garden. She set up 3 containers. Container 1 had loam soil, container 2 had black clay soil, and container 3 had a sandy soil. She added 5 parsley seeds, 5 basil seeds, and 5 thyme seeds to each container. She added 20 mL of water to each container every day and regulated the light to 12 hours light and 12 hours darkness. At the end of a 30 day period she analyzed her results.

1. the water.
2. plant growth.
3. soil type.
4. the type of seeds.

1. responding variables.
2. manipulated variables.
3. controlled variables.
4. experimental variables.

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1. the control experiment is repeated over and over again keeping all variables constant while a controlled variable has all variables in the experiment kept constant
2. the control experiment is the control and we alter only a single variable within the experiment called the control variable
3. the control experiment is repeated over and over again with one variable changed in each experiment while a controlled variable is kept constant in an experiment
4. there is no difference, the terms can be used interchangeably

Use the following information to answer question # 31.

Gloria set up three experiments to test which factor has the greatest effect on plant growth. In the first experiment she took 3 pots, filled them with a similar soil type and planted 5 carrot seeds in each pot. When the seeds germinated and grew to a height of 3 cm, she placed each plant pot into a light of varying duration. Group A had 12 h of sunlight, group B had 16 h of sunlight, and group C had 24 h of sunlight. At the end of 1 week she recorded the plant growth.

In the second experiment Gloria took 3 new pots and added different types of soil. In the first pot she added a loam soil, in the second she added a clay soil, and to the third she added a sandy soil. She planted 5 carrot seeds into each pot. Once the plants reached a height of 3 cm she observed the plants for an additional week and recorded plant growth.

In the third experiment Gloria used 3 more pots and placed 5 seeds into the soil of each pot. The soil was the same in each pot. When the plants reached a height of 3 cm she altered the amount of water each pot received. Group A received 10 mL of water every day, group B received 20 mL of water every day, and group C received 30 mL of water every day. She observed and recorded plant growth at the end of 1 week.

1. control experiment
2. controlled variable
3. manipulated interaction
4. manipulative variable

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Use the following information to answer question # 35 - 36.

1. consumers within a given ecosystem make up the largest mass
2. producers within a given ecosystem make up the largest mass
3. decomposers within a given ecosystem make up the largest mass
4. energy flows from the cod down to the phytoplankton

1. heat of fusion
2. light
3. heat
4. heat of vaporization

Use the following information to answer questions # 44 - 45.

A student was working in the laboratory on an energy experiment. He placed 125 mL of water into a beaker and used a paraffin candle to raise the temperature from 23.2ƒC to 32.3ƒC.

1. 9.72 kJ
2. 3.81 kJ
3. 0.910 kJ
4. 4.86 kJ

Use the following diagram to answer questions 2 - 4.

1. A
2. D
3. E
4. F

1. G
2. D
3. C
4. A

1. 2.01
2. 0.491
3. 1.02
4. 0.981

Use the following chart to answer questions # 41 - 43.

1. V
2. U
3. T
4. S

1. V
2. U
3. T
4. S

Use the following information to answer questions # 31 - 33.

1. 100 cm
2. 75 cm
3. 95 cm
4. 9.2 cm

1. 9.3 cm
2. 160 cm
3. 150 cm
4. 140 cm

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Use the following graph to answer question # 34.

A baby pulled her toy house across the floor. Her mother recorded some data and entered it into graph form.

1. 1.0 J
2. 2.0 J
3. 3.0 J
4. 16 J

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