Science!!
Pls check someone thanks!
1. Which type of energy is most important when considering the heating and cooling of a building?(1 point)
A. thermal energy
B. chemical energy
C. electrical energy
D. potential energy
I chose A.
2. Which statement describes a design factor that should be included in an energy-efficient home built in cold climates?(1 point)
A. insulation that easily conducts thermal energy
B. windows that include multiple glass layers
C. light-colored roofing materials
D. trees that provide shade for the home
I chose A (again).
3. Why do many technological devices use metal?(1 point)
A. Metals allow for the flow of electrons.
B. Metals are an example of an insulator.
C. Metals limit the amount of charge flow.
D. Metals have low chemical reactivity.
I chose C, but I think It's A?
4. An environmental health scientist has studied the air quality in a small town. He has identified the types of chemicals that contribute to the bad air. An engineer reads an article the scientist wrote about the causes of this poor air quality. The engineer is interested in working with the scientist to improve air quality in this town.
What role could the engineer play to solve this problem? (1 point)
A. characterize the health effects of these chemicals.
B. draw a sketch of what the town looks like
C. design a bubbler used to trap the air particles
D. describe how long the chemicals stay in the air
I chose A.
check my answers please!
1. Correct, A. thermal energy is the most important for heating and cooling buildings.
2. Incorrect, the correct answer is B. Windows with multiple glass layers are a design factor that helps to insulate the home better in cold climates.
3. Incorrect, the correct answer is A. Metals allow for the flow of electrons, which is important in many technological devices.
4. Correct, the engineer could help design and implement solutions to improve the town's air quality based on the scientist's findings on the health effects and chemical properties of the contributing substances.
Alright, so for anyone in the future, here are the correct answers for: Physics and Chemistry in Design Quick Check in 8th grade:
1. Thermal energy
2. Windows that include multiple glass layers
3. Metals allow the flow of electrons
4. To confirm the best location on the roof to build the garden
5. Design a bubbler to used to trap the particles
Hope you all have an amazing day and God bless! He loves you!
It's great that you shared the correct answers, but just to clarify, the correct answer for question 4 is actually "To determine which areas in the town have the highest concentrations of the harmful chemicals." And there is no question 5 in the original post. Thank you for trying to help and have a great day!
1. Which type of energy is most important when considering the heating and cooling of a building?
To determine the correct answer, we need to consider the purpose of heating and cooling in a building. Heating is typically done by increasing the temperature of the indoor environment, while cooling is done by decreasing the temperature. Therefore, the most important type of energy is the one that can transfer heat.
A. Thermal energy refers to the energy associated with the motion of particles within a substance. It is directly related to temperature and the transfer of heat.
B. Chemical energy is the energy stored in the bonds of chemical compounds. While it can be converted to other forms of energy, it is not directly involved in the heating and cooling process.
C. Electrical energy is the energy associated with the flow of electric charge. It can be used to power devices that generate heat or cool air, but it is not the primary form of energy involved in heating and cooling.
D. Potential energy is the energy based on an object's position or state. It is not directly related to the heating and cooling of a building.
Based on this analysis, the correct answer is A. Thermal energy because it directly relates to the transfer of heat, which is essential for heating and cooling a building.
2. Which statement describes a design factor that should be included in an energy-efficient home built in cold climates?
A. Insulation that easily conducts thermal energy
To determine the correct answer, we need to consider the design factor that helps retain heat in a cold climate.
A. Insulation that easily conducts thermal energy would be counterproductive because it would allow heat to escape from the building easily.
B. Windows that include multiple glass layers can provide better insulation, reducing heat loss through windows.
C. Light-colored roofing materials can reflect sunlight and prevent excessive heating, but this factor is more relevant for warm climates than cold climates.
D. Trees that provide shade for the home can help reduce cooling needs during hot weather but may not contribute significantly to the heating efficiency in cold climates.
Based on this analysis, the correct answer is B. Windows that include multiple glass layers because it helps retain heat and improve energy efficiency in cold climates.
3. Why do many technological devices use metal?
To determine the correct answer, we need to consider the properties of metals that make them suitable for technological devices.
A. Metals allow for the flow of electrons. This statement is correct. Metals have free electrons that can move within the material and conduct electricity.
B. Metals are an example of an insulator. This statement is incorrect. Metals are not insulators; they are conductors of electricity.
C. Metals limit the amount of charge flow. This statement is incorrect. Metals actually enhance and facilitate the flow of charge.
D. Metals have low chemical reactivity. This statement is partly correct. Metals generally have low reactivity and are less prone to corrosion, which is advantageous for devices that need to remain stable or resist rust.
Based on this analysis, the correct answer is A. Metals allow for the flow of electrons, which makes them suitable for technological devices that rely on electrical conductivity.
4. What role could the engineer play to solve the problem of poor air quality in the town?
To determine the correct answer, we need to consider the relevant role an engineer could play in improving air quality based on the information provided.
A. Characterize the health effects of these chemicals. While important, this is a role typically undertaken by a health scientist and not specifically an engineer.
B. Draw a sketch of what the town looks like. This role does not directly contribute to solving the air quality problem.
C. Design a bubbler used to trap the air particles. This role is relevant as engineers can design devices that capture and remove air pollutants effectively.
D. Describe how long the chemicals stay in the air. While understanding the persistence of chemicals is important, it does not directly contribute to solving the air quality problem.
Based on this analysis, the correct answer is C. Design a bubbler used to trap the air particles as it directly contributes to the improvement of air quality in the town.