Assessment Questions (5):

What is the best course of action for the person shown below?


A. Start sweating
B. Start exercising
C. Drink water
D. Remove clothing
What activity will decrease body temperature?
A. Sweating
B. Exercising
C. Adding clothing
D. Shivering
Which of the graphs below best illustrates homeostasis?


A. Graph A
B. Graph B
C. Graph C
D. Graph D
What advice should you give to a person exercising on a very hot day?
A. Remember to wear lots of clothes so you can sweat off more weight!
B. Take a lot of breaks, and remember to drink fluids!
C. Don't drink anything, it will give you cramps.
D. Go all out! A hot day is the best time to try for a personal best.
Which of the following is an example of homeostasis?
A. During a time of high stress, Justin's heart races, his muscles tense, and he feels sweat dripping down his forehead.
B. Sick with the flu, Alison's body temperature rises to fever levels.
C. Boris doesn't drink very much water one day. To compensate, his kidneys remove less fluid from his blood, and produce less urine than normal.
D. As Grace races up the ten flights of stairs to her apartment, the muscle cells in her legs produce excess lactic acid, causing a burning sensation in her legs.



Assessment Questions (5):

The graph below shows the velocity distribution for a gas at 400 K. Which of the following graphs correspond to the same gas at 800 K?




A. Graph A
B. Graph B
C. Graph C
D. Graph D
A high-temperature gas is compared to the same gas at lower temperature. Which of the following statements is true?
A. Every molecule in the high-temperature gas is moving faster than every molecule in the low-temperature gas.
B. The average molecular speed in the high-temperature gas is faster than the average molecular speed in the low temperature gas.
C. Both A and B are true.
D. Neither A nor B is true.
What Celsius temperature is closest to 431 K?
A. 150°C
B. 250°C
C. 450°C
D. 700°C
The graph below represents the velocity distribution of helium atoms at 800 K. The molar mass of helium gas is 0.004 kg/mole. The molar mass of nitrogen gas is 0.028 kg/mole. Which of the following graphs represents the velocity distribution of nitrogen molecules at 800 K?




A. Graph A
B. Graph B
C. Graph C
D. Graph D
The mean particle velocity for a certain gas at a certain temperature is 2,174 m/sec. From the choices below, what is the most likely value for the most probable particle velocity?
A. 1,927 m/sec
B. 2,174 m/sec
C. 2,348 m/sec
D. There no way to determine the answer to this question.

Assessment Questions (5):

The graph represents the heating of water in a pot. At 150 seconds, the water has just reached a boil. If the heat is left on, what will happen to the temperature and volume of water in the pot? (All temperatures in °C.)


A. The temperature will rise, and the water volume will decrease.
B. The temperature will rise, and the water volume will remain constant.
C. The temperature will remain constant, and the water volume will decrease.
D. The temperature will remain constant, and the water volume will remain constant.
Which of the following statements is most accurate?
A. When liquid water is heated, the molecules move faster.
B. When liquid water is heated, the molecules collide more often.
C. When liquid water is heated, collisions between molecules are more violent.
D. All of the above.
In a pressure cooker, a lid is screwed tightly onto a pot so that the air pressure in the pot is increased. What effect, if any, will this have on the boiling point of water in the pot?
A. The boiling point will be raised.
B. The boiling point will be lowered.
C. The boiling point will be unaffected.
D. None of the above.
Which of the following descriptions explains the process of water freezing?
A. Water molecules speed up until they escape into a different phase.
B. Water molecules slow down until they begin to bond together.
C. Water molecules are squeezed together by high pressure until they begin to stick to one another.
D. As water molecules cool, their shape changes from rounded to irregular, making them more likely to link to one another.
Which of the graphs below illustrates water boiling in Denver, Colorado? (Altitude 1,600 meters.)


A. Graph A
B. Graph B
C. Graph C
D. Graph D

This will help others too!!
Thank-you soo much wonderful person.