Reading 2 Part 1: Energy Pie Charts

Energy pie charts are

• a way to show how energy is stored at different stages during a change.

• qualitatively represent the energy stored in a system

• a second tool used to help represent systems.

• all of the above

Tags

NGSS.HS-PS3-2

Using energy pie charts eliminates the need to draw a system schema. The "system" is unimportant.

• True

• False

In general, you should include everything in a system that is involved in the CHANGE you observe in a system so that the total amount of energy stays the same (Law of Conservation of Energy).

• True

• False

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Unless a system is specified to be frictionless, surfaces that may cause friction should be included in the system to capture all of the energy transformations that occur.

• True

• False

Tags

NGSS.MS-PS3-4

Energy storage modes include:

• Energy stored in movement

• Energy stored in position

• Lost energy

• Thermal waste energy

Tags

NGSS.MS-PS3-2

E_el represents

• electric energy

• elevated energy

• elastic energy

Tags

NGSS.HS-PS2-5

According to the reading, kinetic energy is represented as

• KE

• E_K

• EngK

• KinEn

Which statement(s) are true about what the reading calls, thermal waste energy?

• It is abbreviated E_thW

• It is still stored in the system but is no longer usable; cannot be transferred back into another mode.

• It is lost to the surroundings.

• It is created when two surfaces rub against one another.

Tags

NGSS.HS-PS3-4

E_ph represents

• photo energy

• phase energy

• acidity energy

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

NGSS.HS-PS4-5

You may notice that the reading does not use the term 'potential' energy. What students typically consider 'potential' energy is most closely represented by the reading as:

• E_ph

• E_thW

• E_g

• E_th

Tags

NGSS.HS-PS2-4