Energy Transformations wk 2

Which statement describes the energy changes that occur when water in a tea kettle is heated on a stove that uses natural gas?

• Some of the chemical energy in the natural gas transforms into thermal energy which heats the water. Then some of the thermal energy changes into sound energy when the water forms steam and the steam leaves the kettle.

• Some of the thermal energy in the natural gas transforms into sound energy when the water becomes hot. Then some of the sound energy changes into light energy when the kettle becomes warm.

• Some of the electrical energy in the natural gas transforms into thermal energy which causes the water to form steam. Then some of the thermal energy changes into sound energy and light energy when the steam leaves the kettle.

• Some of the light energy in the natural gas transforms into chemical energy in the water. Then some of the chemical energy changes into kinetic energy when steam leaves the kettle and into sound energy when the water boils.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?

• The chemical energy stored in the match changed to thermal energy and light energy

• The thermal energy stored in the match changed to light energy and chemical energy.

• The light energy and thermal energy stored in the match changed to mechanical energy.

• The light energy and thermal energy stored in the match changed to chemical energy.

Tags

NGSS.MS-PS3-5

A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?

• The chemical energy stored in the match changed to thermal energy and light energy.

• The thermal energy stored in the match changed to light energy and chemical energy.

• The light energy and thermal energy stored in the match changed to mechanical energy.

• The light energy and thermal energy stored in the match changed to chemical energy.

Tags

NGSS.MS-PS3-5

This appliance dries clothes primarily by converting-

• electrical energy to heat and mechanical energy

• mechanical energy to heat and electrical energy

• electrical energy to heat and light

• mechanical energy to heat and vaporization

Tags

NGSS.MS-PS3-3

A cook heats a meal in a microwave oven. What energy transformations occur between the microwave oven and the meal?

• C

• A

• B

• D

Tags

NGSS.MS-PS1-4

Which statement best describes the energy transformations that occur when a candle burns?

• Chemical energy from the flame is converted into light and heat energy.

• Heat energy from the flame is converted into chemical and light energy.

• Heat energy from the air is converted into mechanical and light energy.

• Chemical energy from the air is converted into mechanical and light energy.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A battery-powered watch with a minute hand and an hour hand tells time because of the transformation of one energy form to another. Which of the sequences below illustrates this transformation?

• chemical energy → electrical energy → mechanical energy

• chemical energy → mechanical energy → electrical energy

• mechanical energy → chemical energy → electrical energy

• electrical energy → chemical energy → mechanical

Which energy conversion occurs in a rubber band powered model airplane when it is flown?

• Potential energy stored in the rubber band is transformed into mechanical energy used by the propeller.

• Chemical energy stored in the rubber band is transformed into potential energy used by the propeller.

• Kinetic energy stored in the rubber band is transformed into thermal energy used by the propeller.

• Thermal energy stored in the rubber band is transformed into chemical energy used by the propeller.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

When a lion eats a zebra and then uses the energy from the zebra to run the lions body converts-

• chemical energy to mechanical energy

• electrical energy to chemical energy

• chemical energy to light energy

• mechanical energy to chemical energy

Tags

NGSS.MS-LS1-7

NGSS.MS-PS3-5

Energy transformation for a microwave

• electrical to thermal, light, mechanical, sound

• electrical to chemical

• chemical to thermal

• thermal to chemical to electrical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3