WS6.1a Energy Stores and Transfers

Which of the following are true about Energy Stores?

• SI Unit for Energy is in "N"

• SI Unit for Energy is in "J"

• Energy is required for things to work

• Work is required to produce Energy

The total amount of energy always _____ and the energy store _____ transferred from one store to another.

• changes, can be

• changes, cannot be

• remains constant, can be

• remains constant, cannot be

Which energy store pathway describes charges moving over a potential difference?

• mechanical

• heating

• waves

• electrical

Which energy store pathway is a result of temperature difference?

• mechanical

• heating

• waves

• electrical

Which energy store pathway describes a force acting over a distance?

• mechanical

• heating

• waves

• electrical

Which energy store pathway describes electromagnetic and mechanical propagation (movement)?

• mechanical

• heating

• waves

• electrical

The figure shows the initial and final amounts of energy of the system (cart) before and after the force F is applied.

In this example, ___ units of energy are transferred mechanically by the force F and the speed ___.

• 3, remains constant

• 3, increases

• 4, remains constant

• 4, increases

In heating the butter in the pan, ___ units of energy are transferred from the ___.

• 4, pan to butter

• 4, butter to pan

• 5, pan to butter

• 5, butter to pan

A girl feels hot in the sun because energy is transferred by _____.

Sound is generated by the propagation of ____