Title: Default for Heat
Course: Let's talk about heat

Q: If we put a thermometer in two different objects, and in the object A the thermometer shows 100ºC and in the object B 50ºC, which one is the hottest object?
- Object A. (Perfect answer.)
- Object B. (No. It's no the correct answer. The temperature is a measured of how hot an object is. More temperature means more heat.)
- Both have the same heat (Not it's no the correct answer. The temperature is a measured of how hot an object is. More temperature means more heat.)
- All the answers are wrong. (No. It's no the correct answer. The temperature is a measured of how hot an object is. More temperature means more heat.)
A: Object A.

Q: If two similar objects that have a different temperature (T_A = 100ºC and T_B = 50ºC) are putted in contact; what does it happen?
- Nothing. (No it's not the correct answer. When we put two objects with a different temperature in contact, both will achieve the same temperature. The object with higher temperature gives heat to the other, until they achieve the same temperature.)
- The object with T= 50ºC increases its temperature and the object with T=100ºC decreases its temperature until they achieve the same temperature. (Yes. Correct answer.)
- The object with T=50ºC increases its temperature until it achieves T=100ºC. (No it's not the correct answer. When we put two objects with a different temperature in contact, both will achieve the same temperature. The object with higher temperature gives heat to the other, until they achieve the same temperature.)
- The object with T=100ºC absorbs heat from the object with T=50ºC. (No it's not the correct answer. When we put two objects with a different temperature in contact, both will achieve the same temperature. The object with higher temperature gives heat to the other, until they achieve the same temperature.)
A: The object with T= 50ºC increases its temperature and the object with T=100ºC decreases its temperature until they achieve the same temperature.

Q: What of the next units represents a heat unit?
- Kelvin (No. It's not the correct answer. Correct answer is calories, because Celsius, Fahrenheit and Kelvin are temperature scales not a heat unit.)
- Celsius (No. It's not the correct answer. Correct answer is calories, because Celsius, Fahrenheit and Kelvin are temperature scales not a heat unit.)
- Calories (Yes. Correct answer.)
- Fahrenheit (No. It's not the correct answer. Correct answer is calories, because Celsius, Fahrenheit and Kelvin are temperature scales not a heat unit.)
A: Calories

Q: Some units used to measure heat are: (more than one possible answer)
- Joule (Yes. it's one of the correct answers.)
- Newton (No. It's not the correct answer. Newton measures forces.)
- Watt (No. It's not the correct answer. Watt measures power.)
- Calorie (Yes. It's one of the correct answers.)
A: Joule; Calorie

Q: According to your previous knowledge, what do you think heat is?
- A type of force. (No. It's not the correct answer. Heat is a type of energy.)
- A type of power. (No. It's not the correct answer. Heat is a type of energy.)
- A type of energy. (Yes. It's the correct answer.)
- A type of thermometer. (No. It's not the correct answer. Heat is a type of energy.)
A: A type of energy.

Q: 0º  Celsius degrees are similar to …
- 212 Fahrenheit degrees. (No. It's not the correct asnwer. 0ºC are the same that 32 F)
- 0 Fahrenheit degrees. (No. It's not the correct asnwer. 0ºC are the same that 32 F)
- 32 Fahrenheit degrees. (Yes. It's the corret answer.)
- 100 Fahrenheit degrees. (No. It's not the correct asnwer. 0ºC are the same that 32 F)
A: 32 Fahrenheit degrees.

Q: 212 ºF are the same that:
- 0 ºC (No. It's not the correct answer. 212 ºF are the same that 100ºC.)
- 100 ºC (Yes. Correct answer.)
- 32 ºC (No. It's not the correct answer. 212 F are the same that 100ºC.)
- 50 ºC (No. It's not the correct answer. 212 F are the same that 100ºC.)
A: 100 ºC

Q: 373 K are the same that:
- 0 ºC (No. It's not the correct answer. 373 K are the same that 100ºC.)
- 100 ºC (Yes. Correct answer.)
- 32 ºC (No. It's not the correct answer. 373 K are the same that 100ºC.)
- 50 ºC (No. It's not the correct answer. 373 K are the same that 100ºC.)
A: 100 ºC

Q: If we put in contact two objects with a different temperature:
- Heat flows from the object that has a higher temperature to the other that has a lower temperature, until they achieve the same temperature. (Yes. Perfect answer.)
- Heat flows from the object that has a lower temperature to the other that has a higher temperature, until they achieve the same temperature. (No. It's not the correct answer. Heat flows from the object with higher temperature to the object with lower temperature until they achieve the same temperature.)
- The object with a higher temperature increases its heat. (No. It's not the correct answer. Heat flows from the object with higher temperature to the object with lower temperature until they achieve the same temperature.)
- Nothing happens. (No. It's not the correct answer. Heat flows from the object with higher temperature to the object with lower temperature until they achieve the same temperature.)
A: Heat flows from the object that has a higher temperature to the other that has a lower temperature, until they achieve the same temperature.

Q: 1. When we bring our hands to a car engine after travel 200 km; what we could feel?
A: aaaa
Feedback ("aaaa"): We feel that the engine’ car is hot.

Q: Why do you think so?
A: bbbb
Feedback ("bbbb"): Because during the travel, the engine’ car emit heat

Q: In which of the next situations we need heat? (more than one possible answer)
- To obtain hot water. (Yes. It's one of the correct answers.)
- To watch TV. (No. It's not a correct answer.)
- To play sport. (Yes. It's one of the correct answers.)
- To obtain petrol from the oil by the distillation process. (Yes. It's one of the correct answers.)
- To cook. (Yes. It's one of the correct answers.)
- In cold winter days, to stay comfortable at home. (Yes. It's one of the correct answers.)
- A stone is lying on the Earth' surface. (No. It's not a correct answer.)
- To produce the water cycle. (Yes. It's one of the correct answers.)
- To obtain coffee by using a coffee maker. (Yes. It's one of the correct answers.)
- To listen music. (No. It's not a correct answer.)
A: To obtain hot water.; To play sport.; To obtain petrol from the oil by the distillation process.; To cook.; In cold winter days, to stay comfortable at home.; To produce the water cycle.; To obtain coffee by using a coffee maker.

Q: The boiling point temperature in normal conditions is:
- 0 ºC (No. It's not the correct answer. In normal conditions, the boiling water temperature is 100ºC.)
- 100 ºC (Yes. Correct answer.)
- 50 ºC (No. It's not the correct answer. In normal conditions, the boiling water temperature is 100ºC.)
- 190 ºC (No. It's not the correct answer. In normal conditions, the boiling water temperature is 100ºC.)
A: 100 ºC

Q: The freezing point temperature in normal conditions is:
- 0 ºC (Yes. Correct answer.)
- 100 ºC (No. It's not the correct answer. In normal conditions, the boiling water temperature is 0ºC.)
- 50 ºC (No. It's not the correct answer. In normal conditions, the boiling water temperature is 0ºC.)
- 190 ºC (No. It's not the correct answer. In normal conditions, the boiling water temperature is 0ºC.)
A: 0 ºC

Q: The heat transmission due to the Sun is produced by:
- Conduction (No it's not the correct answer. Radiation is the heat transmission produced in distances (no objects in contact).)
- Convection. (No it's not the correct answer. Radiation is the heat transmission produced in distances (no objects in contact).)
- Radiation. (Yes. It's the correct answer.)
- Hyper ventilation. (No it's not the correct answer. Radiation is the heat transmission produced in distances (no objects in contact).)
A: Radiation.

Q: The heat transmission produced by two solid objects putted in contact is:
- Conduction. (Yes. Correct answer.)
- Convection. (No. It's not the correct answer. Conduction is the heat transmission produced when two solid objects are putted in contact.)
- Radiation. (No. It's not the correct answer. Conduction is the heat transmission produced when two solid objects are putted in contact.)
- Hyper ventilation. (No. It's not the correct answer. Conduction is the heat transmission produced when two solid objects are putted in contact.)
A: Conduction.

Q: The heat transmission that appears in next picture is called:

                                        [Image]
- Conduction. (No. It's not the correct answer. This type of heat transmission in which the heat is transmitted by loops, (that appear in fluids (gases and some liquids)) are called convection.)
- Convection. (Yes. Correct answer.)
- Radiation. (No. It's not the correct answer. This type of heat transmission in which the heat is transmitted by loops, (that appear in fluids (gases and some liquids)) are called convection.)
- Hyper ventilation. (No. It's not the correct answer. This type of heat transmission in which the heat is transmitted by loops, (that appear in fluids (gases and some liquids)) are called convection.)
A: Convection.

Q: A combustion reaction produces heat, so, is an:
- Exothermic reaction. (Yes. Correct answer.)
- Endothermic reaction. (No. It's not the correct answer. An exothermic reaction gives heat.)
- Alternative reaction. (No. It's not the correct answer. An exothermic reaction gives heat.)
- Impossible reaction. (No. It's not the correct answer. An exothermic reaction gives heat.)
A: Exothermic reaction.

Calorie:

Temperature:

Thermometer:

Q: Express 4180 Joules in calories:

(Remember put decimals with a point)
A: 1000
Feedback ("1000"): Correct.

Q: Express 1500 cal in Joules:

(Remember put decimals with a point)
A: 6270
Feedback ("6270"): Correct.

Q: Express 2.5 KJ in calories:

(Remember put decimals with a point)
A: 598.086 (± 0.1)
Feedback ("598.086"): Correct.

Q: Express 3.5 Kcal in Joules:

(Remember put decimals with a point)
A: 14630
Feedback ("14630"): Correct.

Q: a) 200 ºF pass to the Celsius scale temperature: 200 ºF are the same, in Celsius degrees,  than:
A: 93.33 (± 1)

Q: b) 150 ºC pass to the Kelvin scale temperature: 150 ºC are the same, in Kelvin scale, than:
A: 423

Q: [Image]

Match temperatures and pictures.

Help example: The correct answer for 3 (212 ºF) is the picture a.
- 32 ºF | c
- -20 ºC | b
- 80 º F | e
- 11000 ºF | g
- 130 ºF | d
- 373 K | h
- 310 ºF | f

[Image]

Sentence 1:

Q: [Image] [Image] Activity 7 (3 Points) According to the next words and pictures, write the correct word in the gaps (the titles have a gap) of the next text, like the example. You have to write convection, conduction or radiation: (words appear more than one time)

 Words:

Convection                    Conduction                  Radiation

Text:

Heat transfer in our life

 Heat can be transferred from one place to another by convection, conduction or radiation.

Convection (Title)

                                                                        [Image]

Conduction is the main way in which heat energy is transferred in liquids and gases. When a liquid or gas is heated, the part nearest the heat source expands and becomes less dense, so it rises (go up). The cooler, denser liquid is forced to go down. This type of heat transmission is called [...].

 Conduction (Title)

                                                                  [Image]

 [...] is the way in which heat energy in a solid form is transferred. The energy of the particles nearest to the heat source increases. These particles vibrate faster and pass their energy to the nearest particles. Examples of good conductors are “metals”, because they contain freely moving electrons, making easy and fast the energy transmission between particles. Other substances, such as wood and water, are called insulators because they conduct heat slowly. Air is a good insulator and so, materials that trap air such as wool, fur and feathers, are insulators as well.

Radiation (Title)

                                                                               [Image]

This type of heat transmission is in a remote way (substances are not putted in contact). Heat transferred by radiation is done by the form of electromagnetic waves. When an object has a temperature, the object emit a radiation (visible or not) in the form of electromagnetic waves. To transmit heat through [...] it’s not required a medium to convey the energy. The Energy produced by the Sun is an example of radiation.
A: CONVECTION; CONDUCTION; RADIATION

[Image]

Sentence 2:

[Image]

Sentence 3:

Q: [Image]
- CONDUCTION (Perfect.)
- CONVECTION (Perfect.)
- RADIATION (Perfect.)
A: CONDUCTION; CONVECTION; RADIATION

Q: [Image]
- CONDUCTION (No, it's radiation.)
- CONVECTION (No, it's radiation.)
- RADIATION (Perfect.)
A: RADIATION

Q: [Image]
- Conduction (Perfect.)
- Convection (Perfect.)
- Radiation (Perfect.)
A: Conduction; Convection; Radiation

Q: [Image]
- Conduction (No, it's radiation.)
- Convection (No, it's radiation.)
- Radiation (Perfect.)
A: Radiation

Q: [Image]
- Conduction (Perfect)
- Convection
- Radiation (Perfect.)
A: Conduction; Radiation

Q: [Image]
- Conduction (Perfect.)
- Convection
- Radiation (Perfect.)
A: Conduction; Radiation

Q: [Image]
- Conduction (No, it's convection.)
- Convection (Perfect.)
- Radiation (No, it's convection.)
A: Convection

Q: [Image]Magma (Earth)
- Conduction (No, it's convection.)
- Convection (Perfect.)
- Radiation (No, it's convection.)
A: Convection

First way used to obtain heat:

Second way used to obtain heat:

Third way used to obtain heat:

Fourth way used to obtain heat:

Fifth way used to obtain heat:

Q: Next situation need the use of heat (true or false):

I need to obtain boiled water.
- True
- False
A: True

Q: Next situation need the use of heat (true or false):

I use a sandwich maker.
- True
- False
A: True

Q: Next situation need the use of heat (true or false):

I use sunglasses.
- True
- False
A: False

Q: Next situation need the use of heat (true or false):

I want to eat pizza and so, I put the pizza into the oven.
- True
- False
A: True

Q: Next situation need the use of heat (true or false):

I want to cook a fried egg.
- True
- False
A: True

Q: Next situation need the use of heat (true or false):

A stone is lying on the floor.
- True
- False
A: False

Q: Next situation need the use of heat (true or false):

A branch is floating on a river.
- True
- False
A: False

Q: Next situation need the use of heat (true or false):

I want to take a shower with hot water.
- True
- False
A: True

Q: Next situation need the use of heat (true or false):

I burnt wood in a chimney.
- True
- False
A: True

Q: Next situation need the use of heat (true or false):

I read a book.
- True
- False
A: False

[Image]

FOLLOW THE EXAMPLE:

[Image]

Q: Next reaction or process is endothermic or exothermic?

Photosyntesis.
- Exothermic
- Endothermic
A: Endothermic

Q: Next reaction or process is endothermic or exothermic?

[Image]
- Exothermic
- Endothermic
A: Exothermic

Q: Next reaction or process is endothermic or exothermic?

[Image]
- Exothermic
- Endothermic
A: Endothermic

Q: hkbkhhkh

[Image]
- Exothermic
- Endothermic
A: Endothermic

[Image]

Q: uyqssyj
- Zone 1 | Fission
- Zone 2 | Fission
- Zone 3 | Fission
- Zone 4 | Fussion

Q: match
- Zone 1 | Sun

Q: jhjhjhjhjhjh
- [Image] | Sun
- [Image] | Fission
- [Image] | Central nuclear

Write the mark you deserve (number between 1 and 10)