Environmental chem. 1-3 quiz

Question 1

define thermal energy?

Answer 1

The random movements of all the particles in a sample of matter

Question 2

define change in temp in energy?

Answer 2

The average kinetic energy of all the particles in a sample of matter

Question 3

What form of heat transfer does not require the presence of particles?
+ why? + example?

Answer 3

Radiation + waves (X ray)

Question 4

At which of the following temperatures does water change from liquid to solid?

Answer 4

0ºC

Question 5

Many homes are heated by a forced air furnace, from which hot air is pumped into a room through a vent, and the cold air is then forced out of the room through a cold air return. What type of transfer of heat is happening in this situation.

Answer 5

Convection

Question 6

Which of the following definitions best describes the term “atmosphere”?

Answer 6

The layer of gas that extends above a planet’s surface

Question 7

Which of the following forms of heat transfer contribute to global wind patterns?

Answer 7

Convection

Conduction

Solar Radiation

Question 8

What is the reason for the Coriolis effect?

Answer 8

Rotation of Earth

Question 9

What is the most likely reason why flights from Vancouver to Toronto take less time than flights from Toronto to Vancouver?

Answer 9

Pilots can take advantage of the jet stream when travelling east

Question 10

Which of the following best describes the term “climate”

Answer 10

The specific weather patterns for a local region or city

Question 11

Earth’s temperature is regulated by the greenhouse effect. What statement best describes how the greenhouse effect works?

Answer 11

Greenhouse gases act like a greenhouse, which absorbs and retains solar energy, thereby increasing Earth’s temperature

Question 12

what has the lowest albedo

Answer 12

oceans

Question 13

Why is ozone important to the environment?

Answer 13

It screens out ultraviolet light at high altitudes

Question 14

Which of the following statements about albedo and its effect on global warming is true?

1. -As the snow and polar icecaps grow, a decrease in albedo will result and more solar energy
2. -As the snow and the polar icecaps melt, a decrease in albedo will result from the oceans reflecting more solar energy
3. -As snow and polar icecaps melt, a decrease in albedo will result in the oceans absorbing more solar energy
4. -As the snow and polar icecaps grow, an increase in albedo will result in the ice absorbing more radiation

Answer 14

3.

Question 15

The unit of specific heat capacity is

Answer 15

Joules per kilogram

Question 16

The quantity of heat required to raise the temperature of 500 g of iron by 2ºC, given that the specific heat capacity is 500 J/(kgºC)

Answer 16

0.5kJ

Question 17

1.95 kJ of heat is required to raise the temperature of 500 g of lead from 15ºC to its final temperature. Taking the specific heat capacity of lead to be 130 J/(kgºC), the final temperature is:

Answer 17

45˚C