Thermal Energy Unit 6 Connexus Physical Science B

Water boils at 100° C and 212° F. What is water's boiling temperature in Kelvins?(1 point)

373.15 K

Which scenario is an example of radiation?(1 point)

A glass of tea warms when it sits in the sun.

What happens when thermal energy is added to an object?(1 point)

Its particles gain kinetic energy and move more quickly.

A team of students carries out a science experiment about the transfer of kinetic energy between substances. Why should they support their conclusion with reasoning?(1 point)

Reasoning lets others understand the team's thoughts and explains how the team reached its conclusion.

What happens when a fluid's thermal energy increases?(1 point)

The fluid's atoms or molecules gain kinetic energy, so they move around more quickly.

Why does honey dissolve more quickly in hot water than in cold water?(1 point)

The molecules of hot water have more kinetic energy than the molecules of cold water.

What happens when thermal energy is removed from a substance?(1 point)

The substance's atoms lose kinetic energy.

A stone has been sitting in the sun all day. A construction worker picks it up without gloves. What do you expect to happen to the thermal energy in this scenario?(1 point)

The thermal energy will move from the rock to the construction worker's hand, cooling the rock.

What happens when a hot piece of pizza is left uneaten on a plate in a cool room?(1 point)

Thermal energy is transferred from the pizza to the plate and air, warming them.

Which layer of the Earth is the source of the thermal energy that creates convection currents?(1 point)

core

Which is the best example of a thermal insulator?(1 point)

plastic handle of tea pot

Which is the best description of conduction?(1 point)

transfer of thermal energy between two substances or objects that are in contact