Question
Hello, I have some science questions I'd like to double-check before I submit them:
The temperature at which water changes from a gas to a liquid is
Select one:
a. –150°C
b. 100°C
c. –273.15°C
d. 0°C***
A man puts a tea kettle on a stove and turns on the burner. After a few minutes, all the water in the tea kettle is hot.
What process is most responsible for heat spreading throughout the water in the tea kettle?
Select one:
a. Radiation
b. Convection***
c. Conduction
d. Expansion
What is a positive consequence of increased energy use?
Select one:
a. Polluting the environment
b. Using up energy resources
c. Global climate change
d. More choices for fast transportation***
Explain two ways that you can conserve energy in your daily life.
My answer:
One way to conserve energy in everyday life is by switching off lights after you leave a room. This is very easy to do and make a habit of and saves a lot of energy in the long term.
Another way to conserve energy is to wear warm clothing (e.g. a sweater) when you feel a little bit chilly, instead of turning the heat up. This saves the energy used to heat air.
The temperature at which water changes from a gas to a liquid is
Select one:
a. –150°C
b. 100°C
c. –273.15°C
d. 0°C***
A man puts a tea kettle on a stove and turns on the burner. After a few minutes, all the water in the tea kettle is hot.
What process is most responsible for heat spreading throughout the water in the tea kettle?
Select one:
a. Radiation
b. Convection***
c. Conduction
d. Expansion
What is a positive consequence of increased energy use?
Select one:
a. Polluting the environment
b. Using up energy resources
c. Global climate change
d. More choices for fast transportation***
Explain two ways that you can conserve energy in your daily life.
My answer:
One way to conserve energy in everyday life is by switching off lights after you leave a room. This is very easy to do and make a habit of and saves a lot of energy in the long term.
Another way to conserve energy is to wear warm clothing (e.g. a sweater) when you feel a little bit chilly, instead of turning the heat up. This saves the energy used to heat air.
Answers
Damon
water does not boil at the freezing point.
The rest looks ok.
The rest looks ok.
❄ Snowflake ❄
Oh, sorry, I thought it was the condensation temperature. It is 100°C.
Thank you!
Thank you!
Damon
ah, steam also turns to water at 100 deg C (at 1 atm)
water FREEZES at 0 deg C
water FREEZES at 0 deg C
❄ Snowflake ❄
100°C was correct