Venus is hotter due to the greenhouse effect: Venus has an atmosphere about ninety times thicker than that of Earth, and made almost entirely of carbon dioxide, which is one of the gasses that causes the greenhouse effect on Earth.

Venus is often named as Earth’s twin because both worlds share a similar size, surface composition and have an atmosphere with a complex weather system. Both planets have almost the same size and density and Venus is only a 30% closer to the Sun than Earth. …

Why are the surface temperatures of Venus and Earth so very different? Venus is too close to the sun to have liquid water oceans and Earth is far enough from the sun to have liquid water oceans. Radar mapping at radio wavelengths allows us to determine surface elevations.

The real reason is that Venus has a much denser atmosphere with LOADS more greenhouse gas( CO2). It is much hotter on its surface than on Earth’s surface.

Why did the solar nebula heat up as it collapsed? As the cloud shrank, its gravitational potential energy was converted to kinetic energy and then into thermal shock. It flattened as a natural consequence of collisions between particles in the nebula, changing random motions into more orderly ones.

Ch7 concept quiz

Which two factors are most important to the existence of plate tectonics on Earth? Mantle convection helps move the plates, and the plates probably exist because the lithosphere was thin enough to break into these plates.

Two

radioactivity

1 Answer. Pressure, friction, and radiation.

Higher temperatures make rocks weaker. Very high pressures, like those found deep within planetary interiors, can compress rocks so much that they stay solid even when temperatures are high enough to melt them under ordinary conditions.

Cratonic continental lithosphere can be thicker than 200 km and survive for billions of years. This is commonly ascribed to greater buoyancy and strength of the cratonic lithospheric mantle compared to younger lithosphere.

Lithosphere The solid part of the earth. It consists of three main layers: crust, mantle and core.

about 100 km thick

The thickness of the lithosphere can vary geographically by hundreds of kilometres (see fig. In oceanic regions, crustal thickness is nearly constant, but lithospheric thickness depends on the age of the ocean floor and ranges from 0 at the ridge to as much as 100 km for the oldest ocean floor.

about 170 million years

There are several layers shown, color coded brown and black, green, and reddish. The outermost brown and black layer, above the Moho (boundary between crust and mantle) is the crust….

The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere . The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.

The lithosphere is the solid outer section of Earth, which includes Earth’s crust (the “skin” of rock on the outer layer of planet Earth), as well as the underlying cool, dense, and rigid upper part of the upper mantle. The lithosphere extends from the surface of Earth to a depth of about 44–62 mi (70–100 km).

First, if the Earth is bigger that its current size, it would also gain a stronger magnetic field and greater gravitational pull because of the additional mass, and this is a bad news for us, because lifting an object would be so much difficult than ever before due to the increased pull of gravity.

Wow! Earth is the only inner planet in our solar system that has liquid water on its surface. Earth’s amazing gaseous atmosphere is responsible for making life possible on this, the third planet from the Sun. Our atmosphere contains water vapor which helps to moderate our daily temperatures.