What Types Of Surfaces Appear Dark On A Radar Image Taken By A Satellite?

What Types Of Surfaces Appear Dark On A Radar Image Taken By A Satellite??

What types of surfaces appear dark on a radar image taken by satellite? A surface that is smooth or slopes away from the satellite. … What is the main control on whether a planet or moon has active tectonics and volcanism? The size of an object.

What are the dark areas of the moon interpreted to be?

The dark areas are young plains called maria and are composed of basalt. The basalt flowed in and flooded the area created by a huge impact with an asteroid or comet. The light areas are the highlands which are mountains that were uplifted as a result of impacts.

Which of the four Galilean moons is the most volcanically active object in the solar system erupting sulfur rich lava quizlet?

The names Marius proposed for the moons in 1614 (suggested to him by a fellow astronomer Johannes Kepler) are the ones we use today — Io Europa Ganymede and Callisto. Io is the most volcanically active body in the solar system. Its surface is covered by sulfur and lava in many colorful forms.

Is Mercury’s surface heavily cratered?

Mercury and the Moon

Impact craters dominate the surfaces of Mercury and the Earth’s Moon. Both bodies lack liquid water on their surfaces that would erode impact craters over time. They also lack an atmosphere which on planets like the Earth and Venus could disintegrate meteoroids before they impact the surface.

See also at what temperature do human cells die

What is suggested as an indicator of age of a surface in the outer solar system’s ice worlds?


The ages of the surfaces of objects in the solar system can be estimated by counting craters: on a given world a more heavily cratered region will generally be older than one that is less cratered.

What are the dark areas of the Moon interpreted to be quizlet?

What are the dark areas of the Moon interpreted to be? The light-colored lunar highlands because they contain a higher density of craters per area. Which part of the Moon is the oldest and why? 2 billion years.

Why does the Moon appear dark from space?

A Moon Halo. What we perceive as brightness of the Moon as seen from Earth is due to the scattering of the light by the atmosphere. Since there is no medium through which light travels in outer space light is not scattered and hence we see the true features of the Moon in the Sun or Earthlight it reflects.

What is unusual about Uranus quizlet?

What is unusual about Uranus’s axis of rotation? It is tilted almost 90 degrees and lies on its side.

See also :  What Is The Meaning Of Undergo

What surface features do Mars and Earth have in common?

The surface features that Mars has in common with Earth are volcanoes sand dunes and large canyons.

What is Uranus core made of?

While most planets have rocky molten cores the center of Uranus is thought to contain icy materials. The liquid core makes up 80 percent of the mass of the planet mostly comprised of water methane and ammonia ice though it only extends to about 20 percent of the radius.

What is Venus surface?

The surface of Venus is a very hot and dry place. Most of the surface is made up of gently rolling plains. Venus has several large lowlands and two large highland areas which are about the size of Australia and South America.

What are Venus surface features?

The planet is a little smaller than Earth and is similar to Earth inside. We can’t see the surface of Venus from Earth because it is covered with thick clouds. However space missions to Venus have shown us that its surface is covered with craters volcanoes mountains and big lava plains.

What does Mercury surface look like?

Mercury’s surface resembles that of Earth’s Moon scarred by many impact craters resulting from collisions with meteoroids and comets. … Most of Mercury’s surface would appear greyish-brown to the human eye. The bright streaks are called “crater rays.” They are formed when an asteroid or comet strikes the surface.

How can a planet’s surface reveal its age?

The total number of craters recorded by a surface is a measure of its age. If the rate at which craters are formed is known then it is possible to estimate the absolute age of the surface. The present rate of crater formation can be estimated from telescopic observations of various planet-crossing objects.

What is the cause of the colors of Io’s surface?

Io’s volcanism is responsible for many of its unique features. Its volcanic plumes and lava flows produce large surface changes and paint the surface in various subtle shades of yellow red white black and green largely due to allotropes and compounds of sulfur.

See also what is an example of a complete predicate

What are meteoroids?

Meteoroids are lumps of rock or iron that orbit the sun just as planets asteroids and comets do. Meteoroids are found throughout the solar system from the rocky inner planets to the remote reaches of the Kuiper belt. Meteoroids are lumps of rock or iron that orbit the sun just as planets asteroids and comets do.

What did the Cassini spacecraft and its Huygens probe discover on the surface of Titan the largest of Saturn’s moons quizlet?

What did the Cassini spacecraft and its Huygens probe discover on the surface of Titan the largest of Saturn’s moons? Networks of drainages apparently carved by liquids.

See also :  When Does Winter Start In Australia

What makes up Saturn and its ring system?

Saturn’s rings are thought to be pieces of comets asteroids or shattered moons that broke up before they reached the planet torn apart by Saturn’s powerful gravity. They are made of billions of small chunks of ice and rock coated with other materials such as dust.

What are the dominant features on the surface of Mercury?

Craters – Like the Moon the dominant surface feature on Mercury is craters. Furthermore all craters on Mercury show the same morphological characteristics as their lunar counterparts.

Why is it dark in space?

Because space is a near-perfect vacuum — meaning it has exceedingly few particles — there’s virtually nothing in the space between stars and planets to scatter light to our eyes. And with no light reaching the eyes they see black.

Why does the Moon’s surface reflect light?

The moon shines because its surface reflects light from the sun. … This is when the moon is between the sun and the Earth so that the side of the moon reflecting sunlight is facing away from Earth. In the days before and after a new moon we’ll see a sliver of the moon reflecting sunlight.

Why is the Moon red?

The reddish coloration arises because sunlight reaching the Moon must pass through a long and dense layer of Earth’s atmosphere where it is scattered. … This is the same effect that causes sunsets and sunrises to turn the sky a reddish color.

Why didn’t Jupiter become a star?

“Jupiter is called a failed star because it is made of the same elements (hydrogen and helium) as is the Sun but it is not massive enough to have the internal pressure and temperature necessary to cause hydrogen to fuse to helium the energy source that powers the sun and most other stars.

Why is Uranus blue and green?

The blue-green color results from the absorption of red light by methane gas in Uranus’ deep cold and remarkably clear atmosphere. … In fact the limb is dark and uniform in color around the planet.

Why isn’t Pluto considered a planet anymore?

Answer. The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially Pluto meets all the criteria except one—it “has not cleared its neighboring region of other objects.”

How are the appearances of craters used in the relative dating of the moon’s surface features?

How are the appearances of craters used in the relative dating of the Moon’s surface features? Craters that are surrounded by bright rays are younger than rayless craters because the rays are material ejected from the crater onto the surrounding surface. What other body in our solar system most resembles Mercury?

See also :  How Is Petroleum Separated

Why are meteor craters more common on the moon than Earth?

Meteorite craters are more common on the Moon and Mars and on other planets and natural satellites than on Earth because most meteorites either burn up in Earth’s atmosphere before reaching its surface or erosion soon obscures the impact site.

How is crater density used in the relative dating of surface features on the moon?

How is crater density used in the relative dating of surface features on the Moon? The greater the crater density the older the feature is supposed to be. … Formation of the original crust excavation of the large impact basins filling of maria basins and formation of rayed craters.

What planet has ice?

There are two ice giants in the Solar System: Uranus and Neptune.

See also what continent is spain located in

What is Venus made of?

Venus is made up of a central iron core and a rocky mantle similar to the composition of Earth. Its atmosphere is mainly made up of carbon dioxide (96%) and nitrogen (3%) with small amounts of other gases.

Does Pluto have a surface?

Surface. Pluto’s surface is characterized by mountains valleys plains and craters. … The most prominent plains observed on Pluto appear to be made of frozen nitrogen gas and show no craters. These plains do show structures suggesting convection (blobs of material circulating up and down).

What is on Uranus surface?

Surface. As an ice giant Uranus doesn’t have a true surface. The planet is mostly swirling fluids. While a spacecraft would have nowhere to land on Uranus it wouldn’t be able to fly through its atmosphere unscathed either.

What is Sun’s surface?

The photosphere is the visible “surface” of the Sun. The Sun is a giant ball of plasma (electrified gas) so it doesn’t have a distinct solid surface like Earth.

What would Jupiter’s surface look like?

There is no firm surface on Jupiter so if you tried to stand on the planet you sink down and be crushed by the intense pressure inside the planet. … Jupiter upper atmosphere is made of up to 90% hydrogen with 10% helium and then other gases like ammonia.

Satellites Use ‘This Weird Trick’ To See More Than They Should – Synthetic Aperture Radar Explained.

How Satellite Works (Animation)

Interpreting Visible and Infrared Satellite Imagery

Using Satellite Technology to Detect the Dark Fleet