I don't know if anyone saw my questions, so I'll ask again. I'm in need of quick help.
prntsc[remove]r.[remove]com/[remove]j6[remove]kl9e
The table shows the speed of sound waves in different materials. Sound
would travel most quickly through ______.
wood****(?)
water
air
outer space
*Table shown in screenshot, Lightshot is a Secure site*
prntscr[remove].[remove]com/[remove]j6k[remove]moo
The table shows the thermal conductivity of some common materials.
Which would be the best insulator?
diamond
gold
lead
concrete*****(?)
*Table shown in screenshot, Lightshot is a Secure site*
What is an echo?
the absorption of sound waves
the transmission of sound waves
the reflection of sound waves****(?)
the vibration of sound waves
Which is an example of the flow of heat through conduction?
Hot air rises to the top of a room.
A hot-air balloon rises into the sky.
Heat flows from a hot liquid to a pot handle.****(?)
Heat causes winds to blow from the water to the land.
Thanks,
~A, for Anonymous.
all correct.
Thank you! I can't believe I actually did okay!
You didn't. Check the first one again. Which substance on the list is less dense and is not a vacuum? (that's the answer)
To find the answers to your questions, let's break down each question and provide a step-by-step approach to finding the correct answer.
1. "The table shows the speed of sound waves in different materials. Sound would travel most quickly through ______."
To determine which material allows sound to travel most quickly, you would need to refer to the table provided in the screenshot. Unfortunately, I'm unable to directly access or view the table since it is from an external secure site. However, you can access the screenshot by copying the provided link and removing the "[remove]" text. Once you access the table, look for the material with the highest speed of sound waves listed. The material stated in that row would be the correct answer. It seems you believe the answer is wood.
2. "The table shows the thermal conductivity of some common materials. Which would be the best insulator?"
Similar to the previous question, you would need to refer to the table provided in the screenshot to find the best insulator among the listed materials. Follow the same steps to access the table by removing the "[remove]" text. Look for the material with the lowest thermal conductivity value. The material stated in that row would be the best insulator. You believe the answer is concrete.
3. "What is an echo?"
An echo refers to the reflection of sound waves. When sound waves hit a surface and bounce back, they create an audible reflection, which is known as an echo. It seems you correctly identified the reflection of sound waves as the answer.
4. "Which is an example of the flow of heat through conduction?"
Conduction refers to the transfer of heat through direct contact. To identify an example of conduction from the given options, you should understand that only one option involves direct contact. Heat flowing from a hot liquid to a pot handle demonstrates conduction because the heat is being transferred through direct contact between the liquid and the handle. Therefore, you correctly identified heat flowing from a hot liquid to a pot handle as the example of heat flow through conduction.
Remember to access the screenshots by removing the "[remove]" text from the provided links to view the tables and verify the answers.