Podcast
Questions and Answers
What is the primary reason why wool is a poor conductor of heat?
What is the primary reason why wool is a poor conductor of heat?
- Because it is a natural fibre
- Because it is a light-coloured material
- Because it is a dark-coloured material
- Because it has air trapped in between the fibres (correct)
Which of the following types of heat transfer occurs when a cold steel spoon is dipped in a cup of hot milk?
Which of the following types of heat transfer occurs when a cold steel spoon is dipped in a cup of hot milk?
- Convection
- Conduction (correct)
- Evaporation
- Radiation
What is the primary reason why dark-coloured objects absorb more heat than light-coloured objects?
What is the primary reason why dark-coloured objects absorb more heat than light-coloured objects?
- Because they have a lower density
- Because they have a higher density
- Because they have a higher thermal conductivity
- Because they have a higher albedo (correct)
Which of the following is an example of convection in nature?
Which of the following is an example of convection in nature?
What is the primary mode of heat transfer in liquids and gases?
What is the primary mode of heat transfer in liquids and gases?
Why do light-coloured clothes keep us cooler in the summer?
Why do light-coloured clothes keep us cooler in the summer?
What is the primary reason why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing?
What is the primary reason why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing?
What type of heat transfer does not require a medium?
What type of heat transfer does not require a medium?
What is the term for the flow of heat from a body at a higher temperature to a body at a lower temperature?
What is the term for the flow of heat from a body at a higher temperature to a body at a lower temperature?
What is the term for the breeze that blows from the land to the sea?
What is the term for the breeze that blows from the land to the sea?
What is the term for the materials that allow heat to pass through them easily?
What is the term for the materials that allow heat to pass through them easily?
What is the normal temperature of the human body?
What is the normal temperature of the human body?
What is the primary mode of heat transfer near a candle flame?
What is the primary mode of heat transfer near a candle flame?
Why does the hand above the flame feel hotter than the hand on the side of the flame?
Why does the hand above the flame feel hotter than the hand on the side of the flame?
What is the primary cause of the sea breeze?
What is the primary cause of the sea breeze?
What happens to the land and water during the day in coastal areas?
What happens to the land and water during the day in coastal areas?
Why are the windows of houses in coastal areas made to face the sea?
Why are the windows of houses in coastal areas made to face the sea?
What is the name of the breeze that occurs at night in coastal areas?
What is the name of the breeze that occurs at night in coastal areas?
