What is the total surface area of the Earth? [#834]

Earth's surface is the boundary between the atmosphere, and the solid Earth and oceans. Defined in this way, Earth's shape is an idealized spheroid – a squashed sphere – with a surface area of about 510 million square km (197 million sq mi).

---

Earth's surface is the boundary between the atmosphere, and the solid Earth and oceans. Defined in this way, Earth's shape is an idealized spheroid – a squashed sphere – with a surface area of about 510 million square km (197 million sq mi).

An archipelago is a group of islands that are scattered in a body of water, such as a lake, river, or ocean. The word "archipelago" comes from the medieval Italian word archi, which means "chief" or "principal", and the Greek word pelagus, which means "gulf", "pool", or "pond".

---

An archipelago is a group of islands that are scattered in a body of water, such as a lake, river, or ocean. The word "archipelago" comes from the medieval Italian word archi, which means "chief" or "principal", and the Greek word pelagus, which means "gulf", "pool", or "pond".

Earth's surface is the boundary between the atmosphere, and the solid Earth and oceans. Defined in this way, Earth's shape is an idealized spheroid – a squashed sphere – with a surface area of about 510 million square km (197 million sq mi).

---

Earth's surface is the boundary between the atmosphere, and the solid Earth and oceans. Defined in this way, Earth's shape is an idealized spheroid – a squashed sphere – with a surface area of about 510 million square km (197 million sq mi).

For a clear vision, the image must be on the retina. The image distance is therefore fixed for clear vision and it equals the distance of retina from eye lens. It is about 25 cm for a grown up person. A person can theoretically have clear vision of an object situated at any large distance from the eye.

---

For a clear vision, the image must be on the retina. The image distance is therefore fixed for clear vision and it equals the distance of retina from eye lens. It is about 25 cm for a grown up person. A person can theoretically have clear vision of an object situated at any large distance from the eye.

About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water.

---

About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water.

The Earth's crust is not a single, unbroken shell; it's divided into large pieces called tectonic plates. The boundaries where these plates meet are subject to immense stress due to their constant movement. These areas, characterized by frequent movement and deformation, are known as seismic zones or fault zones. The accumulated stress in these weak zones is eventually released in the form of earthquakes. While the asthenosphere is a weak, semi-fluid layer beneath the lithosphere (which includes the crust), the term "seismic zone" specifically refers to the regions within the crust that are prone to seismic activity.

---

The Earth's crust is not a single, unbroken shell; it's divided into large pieces called tectonic plates. The boundaries where these plates meet are subject to immense stress due to their constant movement. These areas, characterized by frequent movement and deformation, are known as seismic zones or fault zones. The accumulated stress in these weak zones is eventually released in the form of earthquakes. While the asthenosphere is a weak, semi-fluid layer beneath the lithosphere (which includes the crust), the term "seismic zone" specifically refers to the regions within the crust that are prone to seismic activity.

The Indian Ocean has an average depth of 12,274 feet (3,741 meters). The deepest point in the Indian Ocean is 24,442 feet (7,450 meters) deep and is located in the Sunda Deep of the Java Trench.

---

The Indian Ocean has an average depth of 12,274 feet (3,741 meters). The deepest point in the Indian Ocean is 24,442 feet (7,450 meters) deep and is located in the Sunda Deep of the Java Trench.

According to available information, significant bank erosion in Majuli, Assam, began after the major earthquake of 1950. This earthquake caused substantial changes in the Brahmaputra riverbed, leading to increased erosion of the island's banks.

---

According to available information, significant bank erosion in Majuli, Assam, began after the major earthquake of 1950. This earthquake caused substantial changes in the Brahmaputra riverbed, leading to increased erosion of the island's banks.

23 hours 56 minutes

---

23 hours 56 minutes

To be certified

---

To be certified

Tsunamis are large-scale ocean waves caused by disturbances in the Earth's crust, such as earthquakes or volcanic eruptions.

---

Tsunamis are large-scale ocean waves caused by disturbances in the Earth's crust, such as earthquakes or volcanic eruptions.