Keyword Analysis & Research: why do hot air rises

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why do hot air rises	0.41	0.4	8899	37	20
why	1.62	1	1665	88	3
do	0.72	0.5	6956	77	2
hot	1.63	0.5	3585	64	3
air	0.82	0.5	3140	40	3
rises	1.35	0.1	8901	3	5

Keyword	CPC	PCC	Volume	Score
why do hot air rises	1.92	0.1	7615	6
if hot air rises why are mountains cold	0.98	0.9	44	20
why hot air balloon rises up	0.93	0.4	4116	23
why is hot air hot and rises up	0.94	0.2	8199	61
why a balloon inflated with hot air rises up	0.63	0.8	3122	71
why hot air rises up	1.97	0.7	7851	43
why hot air rises and cold air sinks	2	0.6	289	56
explain why a hot air balloon rises	1.47	0.4	766	99
explain why air rises above the hot flame	1.95	0.4	2104	69
why are mountains cold at the top	0.06	0.4	2382	94
why are mountains so cold	0.31	0.7	3484	32
why is it cold in mountains	1.26	0.5	1635	73
why are mountains colder at the top	1.45	0.2	5095	50
why mountains are colder	1.44	0.9	6310	6
why is it colder in the mountains	0.38	0.9	4712	68
why are the tops of mountains colder	1.25	0.7	5668	35
why it is cold on mountain top	0.32	0.9	4369	16
why is it cold in higher altitudes	1.24	0.9	36	67
why is it cold at high altitude	1.44	1	2123	32
why are mountain tops colder	0.02	0.5	328	40
why is it colder at higher altitude	0.83	0.4	994	89

(Choose at least 2 and not exceed 5 keywords)

Choose at least 2 and not exceed 5 keywords