Question

questions

1. what has a higher temperature; the sun or jupiter?
2. how does heat transfer?

the correct answer is
a. from hotter objects to even hotter objects
b. from colder objects to hotter objects
c. from hotter objects to colder objects
d. it doesnt matter heat just go wherever it wants

1. you have a glass of hot water that is at 100°c and you pour it into a tub of water that is at 20°c. how does the heat transfer?

the heat from the water at ____°c transfers to the water at ____°c

1. you put your hand into a tub of ice water. your hand has the temperature of 37°c and the tub of ice water has a temperature of 0°c. how does the heat transfer?

the heat transfers from ___________ to the ___________

1. what is thermal energy?
2. what has more thermal energy; the sun or the earth?
3. what has more thermal energy; a bathtub at 100°c or a bathtub at 20°c?
4. what has more thermal energy: a soda in the fridge or a soda on the kitchen table?
5. an ice - cream cone melting because of the sun is an example of which type of heat transfer?

the correct answer is ______
a. conduction
b. convection
c. radiation

1. ice melting in a lemonade is an example of which type of heat transfer?

the correct answer is ______
a. conduction
b. convection
c. radiation

1. your hand accidently touching a hair curlers hot metal part is an example of which type of heat transfer?

the correct answer is ______
a. conduction
b. convection
c. radiation

Explanation:

• Question 13: The Sun is a star and undergoes nuclear fusion, which generates extremely high temperatures. Jupiter is a gas giant planet and its temperature is much lower compared to the Sun.
• Question 14: Heat transfer occurs from hotter objects to colder objects. This is a fundamental principle of thermodynamics.
• Question 15: Based on the heat transfer principle (hotter to colder), the heat from the \(100^{\circ}C\) water transfers to the \(20^{\circ}C\) water.
• Question 16: Using the heat transfer principle (hotter to colder), the heat transfers from the hand (\(37^{\circ}C\)) to the ice - water (\(0^{\circ}C\)).
• Question 17: Thermal energy is the total kinetic and potential energy of the particles in a substance. It is related to the temperature and the mass of the substance.
• Question 18: The Sun is a massive star with ongoing nuclear reactions, so it has more thermal energy than the Earth.
• Question 19: A bathtub at \(100^{\circ}C\) has more thermal energy than a bathtub at \(20^{\circ}C\) (assuming the same amount of water, as thermal energy is related to temperature).
• Question 20: A soda on the kitchen table (assuming room - temperature, which is higher than fridge temperature) has more thermal energy than a soda in the fridge.
• Question 21: An ice - cream cone melting because of the sun is an example of radiation. Radiation is the transfer of heat in the form of electromagnetic waves (like the sun's rays).
• Question 22: Ice melting in lemonade is an example of conduction. Conduction is the transfer of heat through direct contact (the ice and the lemonade are in contact).
• Question 23: Your hand accidentally touching a hair curler's hot metal part is an example of conduction. The heat is transferred from the hot metal (source) to the hand (receiver) through direct contact.

Answer:

1. The Sun
2. D. From hotter objects to colder objects
3. \(100\); \(20\)
4. Hand (\(37^{\circ}C\)); ice - water (\(0^{\circ}C\))
5. The total kinetic and potential energy of the particles in a substance
6. The Sun
7. Bathtub at \(100^{\circ}C\)
8. Soda on the kitchen table
9. C. Radiation
10. A. Conduction
11. A. Conduction