Radiation — Unit test Answers

Which type of energy is transferred by convection currents?

A 40 kg dog is sitting on top of a hillside and has a potential energy of 1,568 J. What is the height of the hillside? (Formula: PE = mgh)

Which is an example of potential energy?

Four students are carrying out different laboratory procedures.Piroja is mixing baking soda and vinegar to see if it reacts.Jason is heating salt water over a burner until the water evaporates.Kali is putting crushed ice and ice cubes on a table to see which melts first.Francisco is separating iron filings from sand using a magnet.

Which occurs when a warm fluid cools down?

The total energy in a system is 675 J. The kinetic energy changes from 296 J to 432 J. Which statement best describes the potential energy of this system?

At the coast on a summer day, the land is hotter than the ocean. Warm air over the land rises and is replaced by cooler air, causing a sea breeze. At night, the land cools quickly and the ocean is now warmer than the land. What will happen next?

Which of these prevents conduction from occurring?

Which indicates that thermal energy is no longer being transferred from boiling water to a mug?

Which condition must be met for conduction to occur?

Kyle has a mass of 54 kg and is jogging at a velocity of 3 m/s. What is Kyle’s kinetic energy? (Formula: )

Jin listed some common thermal insulators and conductors in a chart.Which belongs in the area marked with an X?

Allison drew a diagram to illustrate radiation.

Which is an example of radiation?

Which material would result in the least amount of energy transfer?