Question

Question 1 What does the thermal energy of matter depend upon? a Mass, only b Mass, number of particles and temperature c Number of particles, only d Temperature, only Question 2 The mass of an object will affect it's temperature. True False Question 3 When you double the amount of coffee, you also double the _______________. a temperature b thermal energy c neither is doubled Question 4 Which has more thermal energy, a massive iceberg or a cup of coffee? a An iceberg because it is colder b A cup of coffee, due to its mass c An iceberg, due to its mass d A cup of coffee because it is hotter Question 5 Which way does heat energy flow? a heat energy does not flow b from cold to hot c from hot to cold Question 6 A B C D What happened at point C to end with D? a B transferred thermal energy to A to equalize both in D. Cold always moves toward warmer areas. b This scenario can only be possible in a controlled setting in lab. c The surrounding air transferred thermal energy to A and B to equalize both in D. Air is the best conductor of heat. d A transferred thermal energy to B to equalize both in D. Warmer always moves toward colder areas. Question 7 Why does an aluminum block feel colder to the touch than a paperback book when you pick them up even though both objects are at the same temperature? a the aluminum block is a better conductor of heat so it transfers heat away from your skin faster b the paperback book is a better conductor of heat so it transfers heat away from your skin faster c the aluminum block and the paperback book will feel the same. Watch the following video to review the states of matter and answer the corresponding questions: Question 8 Match the following state of matter to its description. Column A 1. Solid: Solid 2. Liquid: Liquid 3. Gas: Gas Column B a.Particles are tightly packed and held in place. b.Particles are widely dispersed and move quickly. c.Particles are still held together but not as attracted to one another so they can slide past one another. Watch the following video to review conduction, convection and radiation and then answer the corresponding questions: Question 9 Match the process to its description. Column A 1. Conduction: Conduction 2. Convection: Convection 3. Radiation: Radiation Column B a.Heat transfer by contact b.Heat transfer due to density differences c.Heat transfer due to wave motion Question 10 Conduction is most effective in liquids and gases. True False Question 11 Convection is most effective in liquids and gases. True False Question 12 Review the examples below. Which would be considered an example of convection. a sunlight warming your face b boiling water on a hot stove c a glass of water on a counter at room temperature d sea breeze moving from the warm beach to the ocean Question 13 Vocabulary: Match the vocabulary word to its definition. Column A 1. kinetic energy: kinetic energy 2. potential energy: potential energy 3. temperature: temperature 4. thermal energy: thermal energy 5. heat: heat 6. energy transfer: energy transfer 7. conduction: conduction 8. convection: convection 9. convection current: convection current 10. dense: dense 11. radiate: radiate Column B a.how compact particles are b.stored energy that depends upon an object's position c.a measure of the average kinetic energy of particles d.energy of motion e.distribute heat in its surroundings f.transfer of thermal energy among particles within a substance or between two substances g.energy transferred within a substance or from one substance to another; always flows from a warmer area to a cooler area h.transfer of thermal energy within a fluid due to temperature differences i.describes the total energy of a group of particles j.a type of air current that develops as cooler and warmer particles move in a cycle k.occurs when matter with higher kinetic or thermal energy interacts with matter that is lower in energy; energy moves from high to low. Watch the following video to review conductors and insulators and answer the corresponding questions: Question 14 Which type material allows heat and electricity to flow freely? a conductor b insulator c resistor d non-conductor Question 15 Materials that do not allow heat and electricity to flow easily are... a resistors b insulators c conductors d nonconductors Question 16 Metal and _____________________ are considered conductors. a water b air c rubber d silk Question 17 Glass and ________________ can be considered insulators. (select all correct responses) a rubber b air c copper d silk Question 18 What are materials that are poor conductors of thermal energy called? a insulators b coolers c conductors d kinetic modulators Watch the following video to review energy transformations and answer the corresponding questions: Question 19 The Law of Conservation of Energy states that energy cannot be created or destroy. It can only be ________________________ from one form to another. a transformed b reformed c conformed d deformed Question 20 A car transforms chemical energy into _____________________________ energy. a potential b kinetic c radiative d mechanical Question 21 Heat is an example of "wasted energy. " True False Question 22 What is the unit used to denote energy? a Watt b Joule c Newton d Coulomb Question 23 Match the scenario and/or example to the type of energy being described Column A 1. sunlight: sunlight 2. pulling a wagon: pulling a wagon 3. an apple: an apple 4. electrons moving through a wire: electrons moving through a wire 5. a pan heating on the stove: a pan heating on the stove Column B a.mechanical energy b.chemical energy c.thermal energy d.electrical energy e.light energy Question 24 What is an example of chemical energy transforming to mechanical energy? a sunlight charging up solar panels b tea kettle heating up on the stove c switching on a lightbulb d a girl pedaling a bike Please read: The following questions are review questions from Units 2 and 3. Remember, your tests are cumulative so you will see material from previous units on all tests. Question 25 How do simple machines make work easier? a by reducing the amount of force required b by reducing the amount of energy required c by shortening the distance required Question 26 If Mr. Jones was moved from Earth to the moon, what would change? a weight b mass c height d hair color Question 27 Which of the following has the greatest potential energy? a a 15 kg cat at underneath the tree b a 5 kg squirrel in the middle of the tree trunk c a 10 kg eagle's nest full of eggs at the top of a tree d a 10 kg bird below the squirrel Question 28 The faster an object moves the _____________ kinetic energy it has. a more b less c same d not enough information Question 29 A(n) is created by passing current through a coil of wire wrapped about an iron core. a permanent magnet b motor c electromagnet d generator Question 30 What will happen with the magnets below? a they will repel b they will attract c nothing will happen d not enough information to determine

Answer 1

Here are the answers based on your questions:

### Question 1
**Answer: b** Mass, number of particles and temperature

### Question 2
**Answer: True** (The mass of an object can affect its temperature depending on the amount of heat energy it absorbs or loses.)

### Question 3
**Answer: b** thermal energy

### Question 4
**Answer: c** An iceberg, due to its mass (Even though it is colder, its mass means it has more thermal energy overall.)

### Question 5
**Answer: c** from hot to cold

### Question 6
**Answer: d** A transferred thermal energy to B to equalize both in D. Warmer always moves toward colder areas.

### Question 7
**Answer: a** the aluminum block is a better conductor of heat so it transfers heat away from your skin faster

### Question 8
1. Solid: **a**. Particles are tightly packed and held in place.
2. Liquid: **c**. Particles are still held together but not as attracted to one another so they can slide past one another.
3. Gas: **b**. Particles are widely dispersed and move quickly.

### Question 9
1. Conduction: **a**. Heat transfer by contact
2. Convection: **b**. Heat transfer due to density differences
3. Radiation: **c**. Heat transfer due to wave motion

### Question 10
**Answer: False** (Conduction is most effective in solids, not liquids and gases.)

### Question 11
**Answer: True** (Convection is most effective in liquids and gases.)

### Question 12
**Answer: b** boiling water on a hot stove

### Question 13
1. Kinetic energy: **d**. energy of motion
2. Potential energy: **b**. stored energy that depends upon an object's position
3. Temperature: **c**. a measure of the average kinetic energy of particles
4. Thermal energy: **i**. describes the total energy of a group of particles
5. Heat: **g**. energy transferred within a substance or from one substance to another; always flows from a warmer area to a cooler area
6. Energy transfer: **k**. occurs when matter with higher kinetic or thermal energy interacts with matter that is lower in energy; energy moves from high to low.
7. Conduction: **f**. transfer of thermal energy among particles within a substance or between two substances
8. Convection: **h**. transfer of thermal energy within a fluid due to temperature differences
9. Convection current: **j**. a type of air current that develops as cooler and warmer particles move in a cycle
10. Dense: **a**. how compact particles are
11. Radiate: **e**. distribute heat in its surroundings

### Question 14
**Answer: a** conductor

### Question 15
**Answer: b** insulators

### Question 16
**Answer: a** water (Both metal and water are considered conductors, especially water in terms of thermal conductivity.)

### Question 17
**Answer: a** rubber, **b** air (Both are considered insulators.)

### Question 18
**Answer: a** insulators

### Question 19
**Answer: a** transformed

### Question 20
**Answer: d** mechanical

### Question 21
**Answer: True** (Heat is often considered a form of wasted energy because it is not usable for work.)

### Question 22
**Answer: b** Joule

### Question 23
1. Sunlight: **e**. light energy
2. Pulling a wagon: **a**. mechanical energy
3. An apple: **b**. chemical energy
4. Electrons moving through a wire: **d**. electrical energy
5. A pan heating on the stove: **c**. thermal energy

### Question 24
**Answer: d** a girl pedaling a bike

### Question 25
**Answer: a** by reducing the amount of force required

### Question 26
**Answer: a** weight (Mass remains the same, but weight will change due to different gravitational pulls.)

### Question 27
**Answer: c** a 10 kg eagle's nest full of eggs at the top of a tree (It is at a higher location and has more mass compared to the others.)

### Question 28
**Answer: a** more

### Question 29
**Answer: c** electromagnet

### Question 30
**Answer: d** not enough information to determine (Without detailing the position or polarity of the magnets, we cannot determine their interaction.)