Thermal Energy Transfers · Paper 1 — Free Physics SL Practice Questions

A digital thermometer displays a temperature of $20.0\ °\text{C}$. Using the conversion $F = \dfrac{9}{5}C + 32$, what is this temperature in degrees Fahrenheit?

A metal spoon is placed into a bowl of hot soup at $80\ \text{°C}$. The spoon handle is initially at $20\ \text{°C}$. After a few minutes, the handle becomes warm. Which statement correctly identifies both the direction of heat flow and the physical reason for it?

A metal spoon is placed in a cup of hot tea. After a few minutes, the handle of the spoon, which remains above the tea, feels warm. Which statement best explains this observation?

A mercury thermometer is calibrated so that the ice point corresponds to a column height of 0 cm and the steam point corresponds to a column height of 20 cm. The scale between these two fixed points is linear. When the mercury column stands 8 cm above the ice point, what is the temperature reading?