astonomy

What was Brahe and Kheplers Discovery

Brahe and Kepler discovered that the orbits of the planets were ellipses (oval shaped), not circular.

What is the major gas in Mars' atmosphere?

Carbon dioxide

What gas makes up most of Venus' atmosphere?

Carbon dioxide.

What were Copernicus' beliefs about the universe?

Copernicus believed the solar system was heliocentric, not geocentric

Who was Copernicus?

Copernicus was a Polish astronomer

What were Galileo's beliefs about the universe?

Galileo believed in the heliocentric theory.

Who was Galileo?

Galileo was an Italian astronomer

What does heliocentric mean?

Heliocentric means that the sun is in the center of our solar system and the planets and their moons revolve around the sun.

What is Neptune's most prominent feature

Neptune's blue atmosphere

What are the other major gases in the Earth's atmosphere?

Nitrogen, water vapor, and carbon dioxide.

Which is longer on Venus, 1 day or 1 year?

One day is longer on Venus, because on rotation takes 8 months. One year, takes about 7.5 months.

What is a gas in the Earth's atmosphere that is important for living organisms?

Oxygen

Which are terrestrial planets?

Pluto

Why is Pluto no longer classified as a planet?

Pluto is no longer a planet due to its small size. The International Astronomical Union (IAU) reclassified Pluto as a dwarf planet in 2006.

Where was Copernicus from?

Poland

What were Ptolemy's beliefs about the universe?

Ptolemy believed that the universe was geocentric. He also believed that the planets, sun and the moon moved in small circles, which he called orbits.

What are Saturns rings made of

Saturn's rings are made of ice and rock.

Where was Galileo from

italy

How much of the Earth is water?

70%

What were Aristotle's beliefs about the universe?

Aristotle believed that the universe was geocentric.

What time period is Copernicus from?

1500s.

What time period was Galileo from?

1600's

What does geocentric mean?

Geocentric means that the Earth is in the center of the universe and all the planets, moons, and stars revolve around the Earth.

What is gravity?

Gravity is a force that pulls an object toward another object.

How did Galileo prove that our solar system is heliocentric?

He proved this theory by observing Jupiter's moons and their revolutions around Jupiter.

What is inertia?

Inertia is the tendency of a moving object to continue to move in a straight line, or the tendency of a stationary object to stay in place.

What is Saturn's most prominent feature?

Its rings.

Why does Mercury have such extreme differences in its temperature?

Mercury has extreme differences in its temperature because it has a very thin atmosphere. Since the atmosphere is what regulates temperature on a planet, Mercury has a wide range in temperature depending on which side of the planet is facing the Sun

What is the planets order starting from the closest to the Sun?

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, (Pluto...)

What planets did the Ancient Greeks know of?

Mercury, Venus, Earth, Mars, Jupiter, and Saturn.

What is the outer planets order from closest to farthest?

Jupiter, Saturn, Uranus, Neptune, (Pluto)

Which are Gas Giants?

Jupiter, Saturn, Uranus, and Neptune

Why is Mars known as the "Red Planet"?

Mars' surface has a brownish-red color because of the iron oxide (rust) that is on the surface.

What is a terrestrial planet?

Terrestrial planets are planets that have solid, rocky surfaces.

What are the characteristics of the Gas Giants?

The Gas Giants are much larger than the other planets of the solar system; they have gaseous surfaces, and solid cores.

What is Jupiter's most prominent feature?

The Great Red Spot.

Why is the Greenhouse affect happening on Venus?

The Greenhouse Effect is occurring on Venus because the atmosphere of Venus is mostly made of carbon dioxide.

What are the earths four layers made of?

The crust is made of rock, the mantle is made of molten rock, the outer core is also made of molten rock, the inner core is solid.

What are the 4 layers of the Earth?

The four layers are the crust, mantle, inner core, and outer core.

How does the mass of an object affect its inertia?

The more mass an object has, the more inertia it has.

What 2 things does Mars have in common with Earth

Two things that Mars has in common with Earth is that there was once water and that both planets have polar ice caps.

What Planet spins on a 90 degree angle

Uranus is the only planet that spins on a 90 degree angle

Why is Venus called the morning/evening star?

Venus is called the morning/evening star because it looks like a star in the sky.

Why is Venus not technically a star?

Venus is not a star because it does not produce its own light. It is merely reflecting light from the Sun.

What were Sir Isaac Newtons discoveries

gravity, inertia

What are the inner planets?

he inner planets are the 4 planets that are the closest to the sun.

How does the mass of an object affect its gravity?

he more mass an object has, the more gravitational force it has.

what is astronomy?

the study of space and stars