Introductory Science - Demo

The following is a sampling of questions from our Introductory Science testbank.

Use the following information to answer question # 25.

A student set up 2 trays of spinach seeds. When the spinach reached a height of 10 cm, 1 tray was placed in a specially darkened cupboard for 10 days. Both trays were given equal amounts of water and fertilizer. At the end of the 10 day period the plants in the cupboard were removed and the following data was collected.

es1.s.13.025
A logical explanation from these results would be
  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.

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.

es1.s.21.026
The responding variable in the experiment would be
  1. the water.
  2. plant growth.
  3. soil type.
  4. the type of seeds.
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The type of seeds, the number of seeds, the amount of water and the amount of light are examples of
  1. responding variables.
  2. manipulated variables.
  3. controlled variables.
  4. experimental variables.
es1.s.32.030
The difference between a control experiment and a controlled variable is
  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.

es1.s.33.031
This type of experiment procedure is called
  1. control experiment
  2. controlled variable
  3. manipulated interaction
  4. manipulative variable

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

es1.s.51.035
The pyramid of mass illustrates that
  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
es2.k.11.040
The mass of an object multiplied by the specific heat capacity of that object multiplied by a temperature change is the definition for
  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 23.2C to 32.3C.

es2.k.22.044
How much energy was absorbed by the water?
  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.

em1.k.12.02
The structure composed of cellulose and designed to provide structure to the cell is labelled
  1. A
  2. D
  3. E
  4. F
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Protein produced within the cell for use by the cell or in multicellular organisms for use elsewhere within the organism would be transported throughout the cell or completely out of the cell by the structure labelled
  1. G
  2. D
  3. C
  4. A
em2.s.21.045
What is the surface area to volume ratio of a rectangular cell with the dimensions 3 cm X 2.5 cm X 3.5 cm?
  1. 2.01
  2. 0.491
  3. 1.02
  4. 0.981

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

ec3.k.11.041
The unknown that is an acid is
  1. V
  2. U
  3. T
  4. S
ec3.k.12.042
Distilled water would be unknown
  1. V
  2. U
  3. T
  4. S

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

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After 10 s the ball rolled
  1. 100 cm
  2. 75 cm
  3. 95 cm
  4. 9.2 cm
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In 15 s the ball rolled
  1. 9.3 cm
  2. 160 cm
  3. 150 cm
  4. 140 cm

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.

ce1.s.61.034
The amount of work done by the baby pulling the toy 2.0 m was
  1. 1.0 J
  2. 2.0 J
  3. 3.0 J
  4. 16 J




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Last modified: April 14, 1999
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