Semester Exam Review

Which statement best explains the change in the

system?

• Particle motion decreases when thermal energy

  is added to the system.

• Particle motion increases when solid particles

  are added to the system.

• Particle motion increases when thermal energy

  is added to the system.

• Particle motion decreases when gas particles

  are added to the system.

What energy transformation can the student

describe as occurring between point X and point

Y?

• Kinetic changes to potential, then some potential

  changes to thermal.

• Potential changes to kinetic, then some kinetic

  changes to potential.

• Kinetic changes to potential, then some potential

  changes to kinetic.

• Thermal changes to potential, then some

  potential changes to thermal.

Pick TWO graphs that are supported by the data

in the table.

• 
• 
• 

Which of the materials in the table would be a

liquid at 100°C and a gas at 700°C?

• phosphorus, rubidium, and arsenic

• rubidium, iodine, and potassium

• phosphorus and potassium

• sodium and arsenic

When a landform, such as a mountain, is heated

by the Sun, the heat spreads through the rock.

The molecules of the rock heat up and move

faster. They collide with neighboring molecules of

rock, transferring heat energy to them. What is

the name of this phenomenon?

• convection

• condensation

• carbonization

• conduction

Morris is baking a pan of brownies to take to

school. Which of the following best describes

what types of thermal energy transfer are

responsible for transferring heat from the oven to

the brownies?

• convection and radiation

• conduction and nuclear

• convection and nuclear

• conduction and radiation

Mr. Mothra likes to collect river rocks on his daily

walks. One chilly morning, he picks up a beautiful

piece of rock near the bank of the river and

places it in his pocket. If the river rock is a brisk

10°C, and Mr. Mothra has a body temperature of

37°C, which of the following best describes the

immediate transfer of energy taking place in Mr.

Mothra's pocket?

• Thermal energy will flow from Mr. Mothra to the

  rock.

• Thermal energy will flow from the rock to Mr.

  Mothra.

• Thermal energy will only flow from Mr. Mothra

  and the rock directly into the air.

• Thermal energy will only flow individually in

  circles within the rock and Mr. Mothra.

A toy car rolls down an incline and across a

gravel path, where it slows and eventually stops.

What energy transformation takes place as the

car rolls across the gravel

• electrical energy to mechanical energy

• mechanical energy to electrical energy

• mechanical energy to thermal energy

• thermal energy to electrical energy

Which of the following is true?

• When objects produce heat energy, they always

  produce sound energy, too.

• When objects produce light energy, they

  sometimes produce heat energy, too.

• When objects produce light energy, the light

  energy always turns into electrical energy.

• When objects produce heat energy, the heat

  energy always turns into mechanical energy.

Rachel and Billy are conducting an experiment.

The mass of their candle before burning was 7.0

grams. After burning the candle for six minutes,

the mass went down to 5.5 grams. What can the

students determine about the results of their

experiment?

• The law of conservation of mass cannot be

  applied over short periods of time.

• The law of conservation of mass does not apply

  to chemical changes like burning.

• The law of conservation of mass was broken

  because the mass of the candle decreased.

• The law of conservation of mass was not broken

  because the missing mass was released as

  smoke.