Question

multiple choice questions
answer the following multiple choice questions about the reading.

1. according to the text, what primarily causes molecules to move faster?

a. an increase in heat energy
b. a decrease in temperature
c. a change in the object’s state of matter
d. an increase in the number of molecules

1. in the context of heating a school, what is the most important factor to consider when choosing a heating system?

a. the system’s brand name
b. the color of the water used in the system
c. the initial cost of the system
d. how much thermal energy it can transfer

1. how does the reading passage describe the relationship between heat and temperature?

a. heat and temperature are the same thing.
b. heat is the total energy of moving molecules, and temperature is the average energy.
c. temperature is the total energy, while heat is the average energy.
d. temperature is the amount of water, and heat is the speed of the molecules.

Explanation:

1. For molecular motion, heat energy provides the kinetic energy that makes molecules move faster; lower temperature slows them, state change is a result not cause, and molecule count doesn't affect speed directly.
2. A school heating system's core function is to transfer thermal energy to warm the space; brand, water color, and initial cost are not the critical functional factor.
3. Heat is defined as the total kinetic energy of all moving molecules in a substance, while temperature measures the average kinetic energy of those molecules, distinguishing the two concepts.

Answer:

1. A. An increase in heat energy
2. D. How much thermal energy it can transfer
3. B. Heat is the total energy of moving molecules, and temperature is the average energy.