Unit4

As a ball rolls down a ramp toward the ground, which of the following bestdescribes the change in the forms of energy that the ball has?

• kinetic energy to potential energy

• potential energy to heat energy

• potential energy to mechanical energy

• potential energy to kinetic energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A diver is perched on top of a ten meter diving board. She dives off the board and falls toward the water. Which of the following is the most accurate description of the changes in her kinetic and potential energy as she falls toward the water?

• Her kinetic energy increases and her potential energy decreases.

• Her kinetic energy increases and her potential energy remain constant.

• Her kinetic energy decreases and her potential energy increases.

• Her kinetic energy remains constant and her potential energy decreases.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A pitcher at a baseball game is holding the baseball. The pitcher then releases the baseball when he throws the ball toward the batter.

Which of the following statements bestdescribes the transformation of energy that occurs when the pitcher releases the ball?

• The baseball contains kinetic energy before it is released, this energy is transformed into potential energy when the baseball is thrown.

• The baseball contains potential energy before it is released, this energy is transformed into kinetic energy when the baseball is thrown.

• The baseball contains kinetic energy before it is released, this energy is transformed into mechanical energy when the baseball is thrown.

• The baseball contains mechanical energy before it is released, this energy is transformed into potential energy when the baseball is thrown.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A gas grill burns propane in order to cook food. Which of the following best describes the transformation of energy in this process?

• potential energy to kinetic energy

• kinetic energy to thermal energy

• chemical energy to thermal energy

• chemical energy to potential energy

A battery operated car travels around a track. Which of the following best describes the transformation of energy in this process?

• Chemical energy is converted into potential energy.

• Potential energy is converted into mechanical energy.

• Chemical energy is converted into kinetic energy.

• Heat energy is converted into kinetic energy.

Tags

NGSS.MS-PS3-5

Which of the following statements BEST describes electrical energy?

• Electrical energy can change into solar energy.

• Electrical energy can only be produced by burning coal.

• Electrical energy cannot be changed into different types of energy.

• Electrical energy can change into mechanical, thermal, and sound energy.

Solar heating systems can heat pools much more efficiently than electric or gas pool heaters. A solar heating system transforms solar energy into

• chemical energy.

• heat energy.

• mechanical energy.

• radiant energy.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When gasoline burns in an engine some of the chemical energy is transformed into mechanical energy, but most of the energy is lost in the form of

• heat energy.

• light energy.

• electrical energy.

• potential energy.

Tags

NGSS.MS-PS1-2

When wood burns, what happens to the chemical energy in the cells of the wood?

• Most of the energy is absorbed by the air.

• Most of the energy is transformed to potential energy.

• Most of the energy is released as heat and light.

• Most of the energy is lost in the smoke.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Constant motion occurs with no change in speed or direction, while accelerated motion is a measure of the rate of change of an object's

• distance.

• speed

• velocity

• direction