Explanation:
Heat transfer by convection involves gases and liquids as a result of density differences when they are heated.
In the hot air balloon, the air closer to the heater is warmed. This air becomes lighter and it rises. This in turn pushes the balloon up. The cold air away from the heater is denser and begins to sink.
This exchange of hot and cold air sets up convection cells within the balloon and this how heat transfer is attained.
Answer:
B. Composed mostly of granite.
Explanation:
Answer:
1. A tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons.
2. A savanna or savannah is a mixed woodland-grassland ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close.
3. An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea.
Answer:
Terrestrial planets
Explanation:
There are two types of planets:
- The inner planets or terrestrial planets
- The outer planets or Jovian planets.
The outer planets are gas giants and are made of huge mounds of gases. These planets are Jupiter, Neptune, Uranus and Saturn. They all have satellites revolving round them.
The terrestrial planets are small rock masses. They are mercury, venus, earth and mars. Earth has one satellites and Mars has two satellites.
The asteroid belt seperates the Jovian and terrestrial planets. Beyond the Jovian planets lies the Kuiper Belt Objects or KBOs.
Answer:
<u>Option-(E): It is the best option to choose from.</u>
<u> Lithogenous sediments:</u> "Those particles or sediments which are formed by the weathering process of rocks, and mostly from the events occurring in the oceanic volcano."
<u>Vdiatom ooze:</u> It is not a lithogenous sediment, as it is a bio-genic pelagic sediment found deep down in the ocean bed.
Explanation:
<u>As Examples of lithogenous sediment includes; </u>
- volcanogenic sediments,
- glacial deposits,
- illite clays,
- And beach sands.
