*B. sunspots. C. the chromosphere. D. solar wind. 6. The four terrestrial planets that have solid, rocky surfaces are A. Mercury, Jupiter, Saturn, and Mars.B.
Name: Date: Period: 1. are natural or artificial bodies that revolve around more massive bodies such as planets. (Satellites or Comets) 2. Most lunar craters are the result of . (volcanoes or impacts) 3. The time it takes for Earth to around the sun is 1 year.
Neutrons, Protons and electrons are all sub-atomic particles. In relative mass, we always think of protons and neutrons in having a mass of 1 and electrons a mass of 1/1840, which shows that electrons are considerably smaller than protons and neutrons, and only make up a small part of the atom. The amount of protons and neutrons added together is the relative atomic mass, and this is the main structure of the atom. 2. The arrangement of particles in an atom Protons and neutrons make up the main, dense, central nucleus in the centre of the atom.
Question 2 Correct Mark 10.00 out of 10.00 Flag question Question text Sizes of Astronomical Objects — Rank the following objects in size from Largest to Smallest. i.e. in the sequence Largest, 2nd Largest, 3rd Largest, 4th Largest, 5th Largest, 6th Largest, 7th Largest, Smallest. the Milky Way galaxy | Answer 1 | the Sun | Answer 2 | our Solar system | Answer 3 | the local supercluster | Answer 4 | Jupiter | Answer 5 | the universe | Answer 6 | Earth | Answer 7 | Neptune | Answer 8 | Feedback You have correctly selected 8. Correct Marks for this submission: 10.00/10.00.
Sometimes in binary systems, mass flows into a hot accretion disk around the neutron star and causes the emission of x rays. 14. Astronomers have found compacted objects
✓ Pluto at a different angle 1 Pluto has a diameter of 2 300 km. How does this information suggest to scientists that Pluto is not a planet? ✓ Pluto is diameter is less than other planet
A spacecraft, named Horizon, launched in 2006, and it will hopefully reach Pluto in 2015. Pluto has a huge rock, like the moon,
Have you ever looked into the night sky every day for a month to notice that Mars has moved from west to east to west again, that’s retrograde motion. Retrograde motion is a natural occurrence that appears to happen to other planets in our solar system from earth. Retrograde motion is what happens when a planet (we will use Mars as an example) looks as if it is reversing. This occurs when the Earth passes the planet. Direct motion and retrograde motion both occur with Mars, direct motion is when the planet seems to be going forward, and retrograde is when it seems to be going backwards.
Earth's diameter is about 7,200, while tiny Mercury has less than half of that size, about 3,000 miles in diameter. Mercury, a planet, is smaller than Ganymede, a satellite revolving
Meteorites likely traveled in space for millions of years before visiting us here on Earth. They were bathed in cosmic rays, but are not dangerous or radioactive. If your rock looks just like other Earth rocks, it probably is one. Meteorites look and feel different from the ordinary rocks around them. Recently fallen