Question

2. Which of the following is a poor conductor of heat?
A. silver
B. aluminum
C. gold
D. copper
E. air

3. Which statement best describes temperature?
A. It is a measure of heat flow.
B. It is a measure of average kinetic energy.
C. It is a measure of average potential energy.
D. It is a measure of average potential and kinetic energy.
E. It is a measure of radiant energy.

4. Convection is a mode of heat transfer for which types of objects?
A. solids and liquids
B. gases and solids
C. gases only
D. liquids and gases
E. liquids only

5. The zeroth law of thermodynamics describes the state where we can say what about the movement of heat between two substances?
A. the latent heat is increasing
B. the movement of heat is rapid
C. there is no movement of heat
D. the latent heat is decreasing
E. the movement of heat is slow

6. Which statement is true for a heating curve?
A. It shows how the pressure of a substance changes when heated.
B. It shows how the temperature of a substance changes when heated.
C. It shows how the volume of a substance changes when heated.
D. It shows how the mass of a substance changes when heated.

7. Specific heat is the amount of heat required to raise the temperature of a material by 1°C per what unit?
A. volume
B. joule
C. mass
D. pressure
E. density

8. What amount of heat is required to increase the temperature of 75.0 grams of gold from 150°C to 250°C? The specific heat of gold is 0.13 J/g°C.
A. 750 joules
B. 980 joules
C. 1300 joules
D. 1500 joules
E. 2500 joules

9. Which of the following involves convection currents?
A. burning fossil fuels
B. wind patterns
C. solar panels
D. ozone
E. heating blankets

10. Where does geothermal energy come from?
A. sunlight
B. the oceans
C. the land
D. inside Earth
E. wind

11. Which statement about the greenhouse effect is NOT true?
A. The greenhouse effect keeps Earth from becoming too hot during the day.
B. The greenhouse effect causes the change in seasons.
C. The greenhouse effect keeps Earth from becoming too cold during the night.
D. The greenhouse effect makes it possible for organisms to live on Earth.
E. The greenhouse effect can be influenced by human activity.

12. Which gas is the most abundant greenhouse gas?
A. ozone
B. chlorofluorocarbon
C. carbon dioxide
D. methane
E. water vapor

13.Which statement describes nuclear binding energy?
A. It is the difference between the masses of the protons and neutrons and the mass of the nucleus.
B. It is the energy that is required to bind protons and neutrons together in a nucleus.
C. It is the energy that is required to overcome mass defect.
D. It is the energy that is required to overcome the electromagnetic force.
E. It is the result of converting mass to energy.

14. The mass defect is the result of what action occurring?
A. energy being converted into moles of atoms when neutrons break apart protons
B. mass being converted to energy when protons and neutrons bind together in a nucleus
C. mass being converted to energy when protons and neutrons break apart in a nucleus
D. protons and electrons being attracted to each other
E. strong forces overcoming weak forces

15.
What is the mass defect of lithium? Assume the following:
Atomic number of lithium = 3
Atomic mass of lithium = 7.0144 atomic mass units.
Mass of 1 proton = 1.0073 atomic mass units.
Mass of 1 neutron = 1.0087 atomic mass units.

A. 0.0043 atomic mass units
B. 0.0423 atomic mass units
C. 3.0219 atomic mass units
D. 4.0348 atomic mass units
E. 7.0567 atomic mass units

Answer 1

Answer:

Air is right answer of 2 nd mcq