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Free ACT Test Exam Braindumps (page: 139)

Page 138 of 260
PDF with 1039 Questions

You set up an experiment to investigate the different rates at which soil and water heat and cool. You use the following equipment:

Thermometers (measuring in °C)

Container of soil

Container of water

Radiation Lamp

Timer

You obtain the temperature of the soil and water over a period of time and collect the following data:






The following graph was then made using the data.



A sea breeze is a breeze blowing from the ocean onto the land. Air moves from cooler regions to warmer regions. When would a sea breeze occur?

  1. Sea breezes occur during the night.
  2. Sea breezes occur during the day.
  3. Sea breezes occur during the night and the day.
  4. Sea breezes never occur.

Answer(s): B

Explanation:

During the day, the air above the land is warmer than over the ocean since the land heats faster than the oceans (as seen by the soil heating faster than the water in this experiment). Since air will move from cooler regions to warmer regions, the cool air over the ocean will move over to the land. This creates the sea breeze during the day.



You set up an experiment to investigate the different rates at which soil and water heat and cool. You use the following equipment:

Thermometers (measuring in °C)

Container of soil

Container of water

Radiation Lamp

Timer

You obtain the temperature of the soil and water over a period of time and collect the following data:





The following graph was then made using the data.




You complete this experiment a second time, and find that the water reached a higher temperature than the soil. Which of the following could be used to explain why your results are different?

  1. The water was unfiltered.
  2. The soil came from your garden.
  3. The heating lamp was faulty.
  4. You used different sized containers in the second experiment.

Answer(s): C

Explanation:

It is not likely that unfiltered water or soil from your garden will heat differently than any other water or soil. Also, the size of the containers is not likely to affect the outcome of the experiment. However, if the heating lamp were faulty, it would cause your results to be inaccurate.



You set up an experiment to investigate the different rates at which soil and water heat and cool. You use the following equipment:

Thermometers (measuring in °C)

Container of soil

Container of water

Radiation Lamp

Timer

You obtain the temperature of the soil and water over a period of time and collect the following data:





The following graph was then made using the data.




What is the difference in temperature between soil and water during the 13th minute?

  1. 7 degrees Celsius
  2. 7.5 degrees Celsius
  3. 8 degrees Celsius
  4. 8.5 degrees Celsius

Answer(s): D

Explanation:

In the 13th minute, the soil is 30.5 degrees Celsius and the water is 22.0. The difference in temperature is 8.5 degrees Celsius.



The heart is an organ that pumps blood throughout the circulatory system in the body. Red blood cells are a tissue in the body that carry nutrients to the body's cells and waste away from the body's cells. The heart rate increases or decreases depending on the body's needs to transport nutrients and waste.

In an experiment, a female had her heart monitored. For one minute, she sat in a chair quietly. At the end of the first minute to the end of the third minute she did jumping jacks. Finally, she sat again in the chair and waited until her heart rate went back to her resting heart rate as measured in the first minute. After performing this experiment, the following graph was created.





How long did it take for the resting heart rate to return after the exercising stopped?

  1. 1 minute 15 seconds
  2. 1 minute 30 seconds
  3. 1 minute 45 seconds
  4. 2 minutes

Answer(s): C

Explanation:

The exercise stopped at 4 minutes, but the heart rate did not return to its resting rate until about 5 minutes 45 seconds. Remember that between each of the minute lines on the graph, are 60 seconds. So, if a point falls halfway between 5 and 6 minutes, that is 5 minutes and 30 seconds.






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