Table of Contents
- 1 During which phase of a four stroke engine are the waste gases removed?
- 2 What states that thermal energy can be transferred from a cooler location to a warmer location when work is done?
- 3 Which material is a poor thermal insulator?
- 4 Which beaker would have the highest kinetic energy?
- 5 What are the three modes of heat transfer?
During which phase of a four stroke engine are the waste gases removed?
chapter 6 science test
| Question | Answer |
|---|---|
| A measure of the average of the average kinetic energy of particles in a material | Temperature |
| Heat flows easily in a(n) | Conductor |
| Fuel burned inside chambers called cylinders | Internal combustion engine |
| During which phase of a four stroke engine are waste gases removed | Exhaust stroke |
Which term best describes the measure of the average kinetic energy of the particles that make up an object?
Temperature is a measure of the average kinetic energy of the particles in a substance. It is the kinetic energy of a typical particle.
What states that thermal energy can be transferred from a cooler location to a warmer location when work is done?
The Second Law of Thermodynamics(first expression): Heat transfer occurs spontaneously from higher- to lower-temperature bodies but never spontaneously in the reverse direction. The law states that it is impossible for any process to have as its sole result heat transfer from a cooler to a hotter object.
What energy is transferred from warmer to cooler materials?
Heat is the thermal energy that flows from a warmer object to a cooler object. Heat flows only one way, from warmer to cooler objects. Net heat transfer ends when two objects reach the same temperature (“thermal equilibrium”).
Which material is a poor thermal insulator?
Metals are very good thermal conductors. Materials that are poor conductors of thermal energy are called thermal insulators. Gases such as air and materials such as plastic and wood are thermal insulators.
Which is not a mode of heat transfer?
So Radiation, Conduction and Convection are 3 basic types of heat transfer and induction is not a mode of heat transfer.
Which beaker would have the highest kinetic energy?
Because beaker C has the highest temperature and as much water as any other beaker, it has the most thermal energy.
What are the 3 methods of energy transfer?
There are three types of thermal energy transfer: conduction, radiation, and convection.
What are the three modes of heat transfer?
The three types of heat transfer Heat is transfered via solid material (conduction), liquids and gases (convection), and electromagnetical waves (radiation).
Which material allows the easiest transfer of heat?
Metals
A conductor is a material that allows internal (thermal) energy to be transmitted through it easily. Metals, such as copper and aluminium are the best conductors of heat. This is because metals have loosely held outer electrons surrounding the atoms called ‘free’ electrons.