SAVVAS 7.2.3 Energy Transformations

A swing has potential energy if

• it is sitting still

• moving at a constant speed

• accelerating at a fast pace

• using multiple units of kinetic energy

What energy transformations take place when a battery operated radio is in use?

• electrical to chemical to sound

• thermal to nuclear to electrical

• chemical to electrical to sound

• chemical to sound to thermal

According to the Law of Conservation of Energy, energy cannot be ______ or _______

• destroyed, determined

• created, nuclear

• destroyed, remade

• created,destroyed

What type of energy is represented in the picture?

• potential

• chemical

• thermal

• mechanical

Turning on a lamp is an example of energy transformation from electrical to 3 forms of energy. Which of these is NOT created by the lamp?

• thermal

• electrical

• chemical

• electromagentic

Which of the following transfers occurs when food is digested?

• Chemical to mechanical

• Mechanical to thermal

• Mechanical to solar

• Chemical to thermal

Plants turn_______ energy into _______ energy for food.

• thermal, mechanical

• radiant, chemical

• electromagnetic, light

• potential, kinetic

Gravitational potential energy depends on the______ and ______ of the object.

• force, energy

• speed, height

• mass, speed

• height, mass

The roller coaster cart has the most gravitational potential energy at position

• Z

• Y

• W

• X

Electrical energy in motion is what type of energy?

• potential electrical energy

• kinetic electromagnetic energy

• kinetic electrical energy

• potential electromagnetic energy