Which spoon is better to stir a hot soop so you don´t burn your hand, metal or wood? Why?
Wood. Because is a thermal insulator.
How do we measure the heat?
Using a thermometer.
Why does a wooden door get stuck sometimes in the summer?
Because when we increase the temperature of the matter the volume increases (The wood of the door expands and doesn´t fit in the door frame)
What would we observe if we change a mercury thermometer from a warm body to a cooler one?
Change in volume. The mercury would contract because the temperature is lower.
Name the change of state: When you heat water in a kettle...
Evaporation
Name the change of state: I left my ice-cream out of the freezer for a long time...
Melting
Name the change of state: When a puddle begins to have a layer of ice in the winter...
Solidification.
What type of light source is a light bulb?
Artificial.
