Energy

Question 1

combustion

Answer 1

n. The process of burning
When air quality is poor, combustion of materials in a fireplace is
prohibited.
Usage tips Combustion is often followed by of. Parts of speech combust v, combustible adj

Question 2

component

Answer 2

n. One part of a system or whole
Their home theater system has a number of separate components.
Usage tips Component is often followed or preceded by of.

Question 3

convey

Answer 3

v. To transport from one place to another; to transmit or make
known
A messenger conveyed the prince’s letter to the commander of the army.

Question 4

discretely

Answer 4

adv. Separately; distinctly
In order to understand how the engine worked, each component needed to be studied discretely.
Parts of speech discrete adj

Question 5

nucleus

Answer 5

n. A central or essential part around which other parts are
gathered; a core
The nucleus of many European cities is the town square.
Usage tips Nucleus is often followed by of. Parts of speech nuclear adj

Question 6

permeate

Answer 6

v. Tospreadorflowthroughout;topassthroughorpenetrate The smell of cooking permeated the entire apartment building.
Parts of speech permeation n

Question 7

rotate

Answer 7

v. To turn around; to take turns in sequence
The planet rotates on its axis once every 14 Earth days.
The children rotate classroom responsibilities on a weekly basis.
Parts of speech rotation n

Question 8

solar

Answer 8

adj. Of, or relating to, the sun

The ancient society kept time with a solar calendar.

Question 9

source

Answer 9

n. The point of origin or creation
The reporter was unable to identify the source of the information for his story.
Parts of speech source v

Question 10

trigger

Answer 10

v. To set off or initiate
I was certain any mention of politics would trigger a big argument.
Parts of speech trigger n