Fill in the blank
A burning candle changes ? Energy into ?
The choice options are:
Gravitational
Electrical
Potential
Heat
41 answers
A burning candle changes potential energy into heat.
Which forms of energy can you identify here?
It’s a light bulb
A: Sound
B: Thermal
C: Mechanical
D: Nuclear
E: Light/Radiant
It’s a light bulb
A: Sound
B: Thermal
C: Mechanical
D: Nuclear
E: Light/Radiant
The forms of energy that can be identified in a light bulb are:
- Thermal energy (heat) generated from the light bulb
- Light/radiant energy emitted from the light bulb
- Thermal energy (heat) generated from the light bulb
- Light/radiant energy emitted from the light bulb
A 20 pound barbell is brought from earth to the International Space Station(ISS). How does this trip affect the gravitational force between the two ends of the barbell? Assume the distance between the barbell end masses does not change.
A) The gravitational force between the ends decreases.
B The gravitational force between the ends increases.
C The gravitational force between them doubles.
D The gravitational force between them decreases by one half.
E The gravitational force between the ends remains the same.
A) The gravitational force between the ends decreases.
B The gravitational force between the ends increases.
C The gravitational force between them doubles.
D The gravitational force between them decreases by one half.
E The gravitational force between the ends remains the same.
The gravitational force between the two ends of the barbell will remain the same.
The gravitational force between two objects depends on the mass of the objects and the distance between them. In this case, bringing the barbell from Earth to the ISS does not change the mass of the barbell or the distance between its ends, so the gravitational force between the ends remains constant.
The gravitational force between two objects depends on the mass of the objects and the distance between them. In this case, bringing the barbell from Earth to the ISS does not change the mass of the barbell or the distance between its ends, so the gravitational force between the ends remains constant.
Fills in the blanks
Heat is a measure of how much energy flows from ? objects to ? objects. It ? the same thing as temperature
A: Hot, Cold, is not
B: Hot, Cold, is
C: Cold, Hot, is not
D, Cold, Hot, is
Heat is a measure of how much energy flows from ? objects to ? objects. It ? the same thing as temperature
A: Hot, Cold, is not
B: Hot, Cold, is
C: Cold, Hot, is not
D, Cold, Hot, is
Heat is a measure of how much energy flows from hot objects to cold objects. It is not the same thing as temperature.
So the correct option is:
A: Hot, Cold, is not
So the correct option is:
A: Hot, Cold, is not
Room temperature soda cans are placed in a cooler and taken to a football game
Which of the two statements best describes the characteristics that contribute to keeping the sodas cold?
The color of the ice chest contributes to keeping the sodas cold.
The gap of air in between the layers of plastic contributes to keeping the sodas cold.
The shape of the ice chest contributes to keeping the sodas cold.
The thickness of material contributes to keeping the sodas cold.
The size of the ice chest contributes to keeping the sodas cold.
Which of the two statements best describes the characteristics that contribute to keeping the sodas cold?
The color of the ice chest contributes to keeping the sodas cold.
The gap of air in between the layers of plastic contributes to keeping the sodas cold.
The shape of the ice chest contributes to keeping the sodas cold.
The thickness of material contributes to keeping the sodas cold.
The size of the ice chest contributes to keeping the sodas cold.
The two statements that best describe the characteristics that contribute to keeping the sodas cold are:
1. The thickness of material contributes to keeping the sodas cold. Thicker materials provide better insulation and help retain the cold temperature inside the cooler.
2. The air gap in between the layers of plastic contributes to keeping the sodas cold. Air is a poor conductor of heat, so having an air gap between layers of plastic can also help with insulation and keeping the cold temperature inside the cooler.
1. The thickness of material contributes to keeping the sodas cold. Thicker materials provide better insulation and help retain the cold temperature inside the cooler.
2. The air gap in between the layers of plastic contributes to keeping the sodas cold. Air is a poor conductor of heat, so having an air gap between layers of plastic can also help with insulation and keeping the cold temperature inside the cooler.
After an hour in the cooler, the sodas get colder and the ice gets warmer. Which of the following explains these changes correctly?
The coldness is leaving the ice and going into the soda.
The heat is leaving the ice and going into the soda.
The coldness is leaving the soda and going into the ice.
The heat is leaving the soda and going into the ice.
The coldness is leaving the ice and going into the soda.
The heat is leaving the ice and going into the soda.
The coldness is leaving the soda and going into the ice.
The heat is leaving the soda and going into the ice.
The correct explanation for these changes is:
The heat is leaving the soda and going into the ice.
In this case, the ice absorbs heat from the surrounding environment and the drinks in the cooler (sodas) lose heat to the ice, causing them to get colder. So, the heat is transferring from the soda to the ice, not coldness.
The heat is leaving the soda and going into the ice.
In this case, the ice absorbs heat from the surrounding environment and the drinks in the cooler (sodas) lose heat to the ice, causing them to get colder. So, the heat is transferring from the soda to the ice, not coldness.
Use the arrow to show which way thermal energy is moving
Coke and ice
Coke and ice
Coke (thermal energy moving into the ice) -> Ice (heat absorbed, causing ice to melt and soda to cool)
While visiting the beach during summer vacation, a sea breeze keeps you cool and comfortable during the hottest part of the day. Which BEST explains why this happens?
cool air rising over lands allows warm air from the ocean to blow inland
there are similarities in temperature between the land and the water
a thunderstorm is approaching
warm air rises over the land allows cooler air from the ocean to blow inland
cool air rising over lands allows warm air from the ocean to blow inland
there are similarities in temperature between the land and the water
a thunderstorm is approaching
warm air rises over the land allows cooler air from the ocean to blow inland
The correct explanation for why a sea breeze keeps you cool and comfortable during the hottest part of the day is: "Warm air rises over the land allowing cooler air from the ocean to blow inland."
This phenomenon occurs because during the day, the land heats up more quickly than the sea. As the land heats up, warm air rises, creating a region of lower pressure over the land. At the same time, the sea remains cooler with higher pressure. This pressure difference causes the cooler air over the sea to flow towards the lower pressure area over the land, creating the sea breeze that helps keep you cool.
This phenomenon occurs because during the day, the land heats up more quickly than the sea. As the land heats up, warm air rises, creating a region of lower pressure over the land. At the same time, the sea remains cooler with higher pressure. This pressure difference causes the cooler air over the sea to flow towards the lower pressure area over the land, creating the sea breeze that helps keep you cool.
Three friends Emily, Josh, and Dakota, are arguing about why you feel heat from a fireplace when you stand near it.
Emily says, "I think when you feel the heat from the stove it's because of conduction." Josh says, "Emily, you're wrong! It's radiation." Dakota says, "No, Josh & Emily, it's convection!"
Which friend is correct? Explain why or why not?
Emily says, "I think when you feel the heat from the stove it's because of conduction." Josh says, "Emily, you're wrong! It's radiation." Dakota says, "No, Josh & Emily, it's convection!"
Which friend is correct? Explain why or why not?
All three friends have valid points, as heat transfer through conduction, radiation, and convection can all contribute to feeling heat from a fireplace when standing near it:
1. Conduction: This is the transfer of heat through direct contact between objects. When you stand near the fireplace, the heat is conducted through the air molecules to your body.
2. Radiation: This is the transfer of heat through electromagnetic waves. The fireplace emits infrared radiation, which heats up objects (including your body) in its path without necessarily heating the air in between.
3. Convection: This is the transfer of heat through the movement of fluids (liquids or gases). The warm air near the fireplace rises, creating a convection current that carries heat towards you.
In this scenario, all three heat transfer mechanisms play a role in why you feel heat from the fireplace. So, all friends are partially correct in their explanations.
1. Conduction: This is the transfer of heat through direct contact between objects. When you stand near the fireplace, the heat is conducted through the air molecules to your body.
2. Radiation: This is the transfer of heat through electromagnetic waves. The fireplace emits infrared radiation, which heats up objects (including your body) in its path without necessarily heating the air in between.
3. Convection: This is the transfer of heat through the movement of fluids (liquids or gases). The warm air near the fireplace rises, creating a convection current that carries heat towards you.
In this scenario, all three heat transfer mechanisms play a role in why you feel heat from the fireplace. So, all friends are partially correct in their explanations.
There’s only. 1 person that’s correct, and it’s Josh
Thank you for the clarification. In this case, Josh is correct as the primary mechanism responsible for feeling heat from a fireplace when standing near it is radiation. The fireplace radiates heat in the form of infrared radiation, which directly heats objects within its line of sight, including your body. So, the correct explanation for feeling heat from a fireplace near it is indeed radiation. Thank you for the correction.
Drag and drop the pins to correctly label what is happening in the picture.
DRAG & DROP THE ANSWER
Kinetic energy increases as the temperature rises.
Kinteic energy increases as the temperatue drops.
Kinteic energy decreases as the temperature drops.
Kinetic energy decreases as the temperature rises.
Picture 1: Temp= 400k
Picture 2: Temp= 50k
DRAG & DROP THE ANSWER
Kinetic energy increases as the temperature rises.
Kinteic energy increases as the temperatue drops.
Kinteic energy decreases as the temperature drops.
Kinetic energy decreases as the temperature rises.
Picture 1: Temp= 400k
Picture 2: Temp= 50k
I'm sorry for the confusion, as I can't see the picture. However, I can provide the answer based on the information provided.
- At Picture 1 (Temp = 400K): Kinetic energy increases as the temperature rises.
- At Picture 2 (Temp = 50K): Kinetic energy decreases as the temperature drops.
Please drag and drop the correct labels according to the information provided.
- At Picture 1 (Temp = 400K): Kinetic energy increases as the temperature rises.
- At Picture 2 (Temp = 50K): Kinetic energy decreases as the temperature drops.
Please drag and drop the correct labels according to the information provided.
What about the other 2?
I apologize for that oversight. Here are the correct labels for all four scenarios:
- Picture 1 (Temp = 400K): Kinetic energy increases as the temperature rises.
- Picture 2 (Temp = 50K): Kinetic energy decreases as the temperature drops.
- Picture 3 (Temp = 50K): Kinteic energy decreases as the temperature rises.
- Picture 4 (Temp = 50K): Kinetic energy increases as the temperature drops.
Please drag and drop the correct labels according to the information provided.
- Picture 1 (Temp = 400K): Kinetic energy increases as the temperature rises.
- Picture 2 (Temp = 50K): Kinetic energy decreases as the temperature drops.
- Picture 3 (Temp = 50K): Kinteic energy decreases as the temperature rises.
- Picture 4 (Temp = 50K): Kinetic energy increases as the temperature drops.
Please drag and drop the correct labels according to the information provided.
Which of the following would be the best at transferring thermal energy?
styrofoam cup
B fiberglass insulation
C rubber floor mat
D iron radiator
styrofoam cup
B fiberglass insulation
C rubber floor mat
D iron radiator
The best material for transferring thermal energy is D) iron radiator. Iron has high thermal conductivity compared to styrofoam, fiberglass, or rubber, making it more effective at transferring thermal energy. Iron radiators are commonly used for heating systems because of their ability to absorb and transfer heat efficiently.
Which type of heat transfer happens when you get a sunburn during a baseball game?
Convection
Conduction
Radiation
Convection
Conduction
Radiation
The type of heat transfer that happens when you get a sunburn during a baseball game is Radiation. Sunburn occurs due to exposure to ultraviolet radiation from the sun, which directly heats the skin and causes damage, leading to a sunburn.
A bowling ball, baseball, golf ball, and ping pong ball are all rolling down a bowling lane at the same speed. Which one has the most kinetic energy?
golf ball
bowling ball
baseball
ping pong ball
golf ball
bowling ball
baseball
ping pong ball
The kinetic energy of an object is directly proportional to its mass and velocity. Since all the balls are rolling down the bowling lane at the same speed, the ball with the most kinetic energy would be the one with the most mass.
Therefore, the bowling ball would have the most kinetic energy among the golf ball, baseball, golf ball, and ping pong ball rolling down the bowling lane at the same speed.
Therefore, the bowling ball would have the most kinetic energy among the golf ball, baseball, golf ball, and ping pong ball rolling down the bowling lane at the same speed.
Temperature is a way to measure the ? particles of matter
Temperature is a way to measure the kinetic energy of particles of matter.
Fill in the blanks with CONDUCTION, CONVECTION, RADIATION:
? is the transfer of energy through direct contact.
? is the transfer of energy through waves.
? is the transfer of energy through a medium such as a liquid or a gas.
? is the transfer of energy through direct contact.
? is the transfer of energy through waves.
? is the transfer of energy through a medium such as a liquid or a gas.
- Conduction is the transfer of energy through direct contact.
- Radiation is the transfer of energy through waves.
- Convection is the transfer of energy through a medium such as a liquid or a gas.
- Radiation is the transfer of energy through waves.
- Convection is the transfer of energy through a medium such as a liquid or a gas.
A solid can turn into gas if enough ? is added
A solid can turn into gas if enough heat is added.
Three containers with the same amount of the same meterial is shown below. Label them from most to least thermal energy
Gas
Liquid
Solid
Gas
Liquid
Solid
From most to least thermal energy:
1. Gas
2. Liquid
3. Solid
As thermal energy increases, the state of matter changes from solid to liquid to gas. Gases have the highest thermal energy compared to liquids and solids.
1. Gas
2. Liquid
3. Solid
As thermal energy increases, the state of matter changes from solid to liquid to gas. Gases have the highest thermal energy compared to liquids and solids.
No you have to put them in order
Apologies for the oversight. Here is the correct order from most to least thermal energy:
1. Gas
2. Liquid
3. Solid
1. Gas
2. Liquid
3. Solid
Which of the following statements is most accurate?
A All of the above.
B
When liquid water is heated, the molecules collide more often.
C When liquid water is heated, the molecules move faster.
D）
When liquid water is heated, collisions between molecules are more violent.
A All of the above.
B
When liquid water is heated, the molecules collide more often.
C When liquid water is heated, the molecules move faster.
D）
When liquid water is heated, collisions between molecules are more violent.
The most accurate statement among the options is:
C) When liquid water is heated, the molecules move faster.
Heating a substance increases the kinetic energy of its molecules, causing them to move faster.
C) When liquid water is heated, the molecules move faster.
Heating a substance increases the kinetic energy of its molecules, causing them to move faster.
1 answer