Forms of Energy & Evidence of Transfer — Practice · Grade 6 Science

Chapter: Energy, Heat & Thermal Design

What this practice covers

By the end of Forms of Energy & Evidence of Transfer you should be able to:

8 questions, written answer and multiple choice, each with a worked explanation.

Vocabulary used: kinetic energy, potential energy, evidence, system boundary, uncertainty.

Problem 1

Does increasing speed increase the car’s mass?
Answer and explanation

No. It changes the energy associated with motion, not the amount of matter in the car.

Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.

Problem 2

Why must a reference position be stated?
Answer and explanation

Potential energy comparisons depend on relative positions and the chosen reference; a height number alone is incomplete.

Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.

Problem 3

Is light the same substance as battery material?
Answer and explanation

No. Light transfers energy by radiation; battery matter and emitted radiation are different parts of the explanation.

Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.

Problem 4

Why is a list of forms not a complete explanation?
Answer and explanation

The explanation must connect the stages and observable changes, including transfers to surroundings rather than merely naming categories.

Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.

Problem 5

Develop a complete response: Explain the energy forms and why temperature or casing mass alone would not measure the 100 J. Include relevant evidence and one method or model limit.
Answer and explanation

The modeled 100 J transfers into 25 J light and 75 J thermal pathways. Mass in grams describes matter, while a temperature reading in °C is not an energy total. The unchanged casing mass does not mean no energy transfer occurred, and this illustrative partition is not a measurement of every flashlight.

Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.

Problem 6

Apply the unit independently: Two identical stationary books lie on shelves at different heights. Which energy comparison is relevant? Give a reason and a relevant qualification.
Answer and explanation

Gravitational potential energy relative to a common reference. The higher book has greater potential energy in the book–Earth system under matched mass and gravity conditions.

Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.

Problem 7

Which statement correctly uses kinetic energy in Forms of Energy & Evidence of Transfer?
  1. An energy form can be identified without describing any process or system.
  2. Temperature in degrees Celsius is an amount of energy in joules.
  3. kinetic energy: Energy associated with motion.
  4. One illustrative result establishes every real condition and needs no further evidence.
Answer and explanation

kinetic energy: Energy associated with motion.

Energy associated with motion. The modeled 100 J transfers into 25 J light and 75 J thermal pathways. Mass in grams describes matter, while a temperature reading in °C is not an energy total. The unchanged casing mass does not mean no energy transfer occurred, and this illustrative partition is not a measurement of every flashlight.

Problem 8

Which statement correctly uses potential energy in Forms of Energy & Evidence of Transfer?
  1. One illustrative result establishes every real condition and needs no further evidence.
  2. Temperature in degrees Celsius is an amount of energy in joules.
  3. An energy form can be identified without describing any process or system.
  4. potential energy: Energy associated with relative position or configuration in an interacting system.
Answer and explanation

potential energy: Energy associated with relative position or configuration in an interacting system.

Energy associated with relative position or configuration in an interacting system. The modeled 100 J transfers into 25 J light and 75 J thermal pathways. Mass in grams describes matter, while a temperature reading in °C is not an energy total. The unchanged casing mass does not mean no energy transfer occurred, and this illustrative partition is not a measurement of every flashlight.

Browse all courses