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Aleksandr [31]
2 years ago
10

Most of our knowledge about Earth's interior comes from __________. drill holes volcanic eruptions seismic waves examination of

deep mine shafts
Geography
1 answer:
Lostsunrise [7]2 years ago
8 0

Answer:

Seismic waves are recorded by a machine called a seismograph, which tells us about the strength and speed of the seismic waves

Explanation:

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What form of geological activity does the great rift valley represent
Savatey [412]

Answer: Volcano

Explanation:

The Great Rift Valley is the site of major geological activity that stretches from Mozambique to the Middle East. Scientists believe that Africa and the Arabian Peninsula were joined together before they were separated by a process called rifting.

As the Earths tectonic plates begin to tear apart in this region, molten magma emerge from the earth crust to fill the void resulting in a separation.

Geologist estimates that the phenomenon which resulted in the great rift valley started 25 million years ago and gave rise to the Red sea. It is believed that the Indian Ocean flooded into the rift to form the Red Sea.

The.magma that seeps upward to fill crustal voids in the rift valley emerge mainly via volcanoes. Hence, many active and semi-active volcanoes are scattered throughout the region referred to as the Great Rift Valley, including Mount Kenya and Mount Kilimanjaro.

5 0
3 years ago
The ratio of girls to boys in a chess club was 5 : 4 There were 32 boys. How many girls where there in the club​
Vlada [557]

Answer:

40

Explanation:

32 divided by 4 is 8, so just multiply that by 5 since that's the girls ratio and you get 40

3 0
3 years ago
Which are statements that are true about ecosystems? Hunters have a part in balancing the earth's ecosystems. In a healthy ecosy
Eddi Din [679]

Answer:

Your backyard is an ecosystem, Producers return nutrients to the soil, and The sun is the primary source of energy in an ecosystem.

Explanation:

this is the most common answers i could find

8 0
4 years ago
Read 2 more answers
33. What is the mass of 1 ha of soil to 15 cm g/cm, soil bulk density 1.5 Mg/m) 10, 000 m2 SUi a. 1,500,000 kg b. 3,038,608 kg 2
Oliga [24]

Answer:

The correct option is: 2,250,000 kg  

Explanation:

Given : Area A = 1 ha (Hectare) = 10,000 m²

Bulk density = 1.5 Mg/m³ = 1.5 × 1000 kg/m³ = 1500 kg/m³ (∵ 1 Mg=1000 kg)

Depth of soil = 15 cm = 0.15 m   (∵ 1 m = 100 cm)

Volume  can be calculated by:

Volume = area × Depth = 10,000 m² × 0.15 m = 1500 m³

As we know, density = mass/ volume

Therefore, <u>Mass of soil</u>  = Bulk density × volume = 1500 kg/m³ × 1500 m³ = 2,250,000 kg

4 0
3 years ago
An aging population will impact Italy’s economy in all of the following ways except by __________. A. Leading to increased costs
-Dominant- [34]
An aging population will impact Italy’s economy in all of the following ways except by __________.

C. Leading to increased costs associated with educating and feeding the population.
7 0
2 years ago
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