What is the relationship between the kinetic energy of an object and its speed?

• Kinetic energy is directly proportional to the square of its speed.

• Kinetic energy is inversely proportional to its speed.

• Kinetic energy is directly proportional to its speed.

• Kinetic energy is independent of its speed.

Which state of matter has a definite mass and volume but takes the shape of its container?

• Liquid

• Solid

• Gas

• Plasma

What characteristic of solids allows them to maintain a fixed shape?

• Particles are tightly packed and only vibrate in place.

• Particles are loosely arranged and flow around each other.

• Particles move quickly and bounce off each other.

• Particles have enough energy to expand and fill all available space.

In which state of matter do particles have enough energy to expand and fill all available space?

• Gas

• Solid

• Liquid

• Plasma

What does the temperature of a substance reflect?

• The average kinetic energy of its particles.

• The total mass of its particles.

• The volume of the substance.

• The density of the substance.