Earth|Moon#!#Asteroids#!#Meteoroids

Asteroids are

Draw a concept map using the words: Universe, Galaxies, Milky way, Solar System, Sun, Planets, Natural satellies or Moons, Asteroids, Comets, Meteoroids, Moon, tides, Inner planets, Outer planets, Rings, Phases.

What are meteoroids ?

An asteroid, headed directly toward Earth, has a speed of 12 km/s relative to the planet when the asteroid is 10 Earth radii from Earth's center. Neglecting the effects of Earth's atmosphere on the asteroid, find the asteroid's speed v_f when it reaches Earth's surface.

Statements: All planets are stars All stars are asteroids All asteroids are moons Some moons are rocks Conclusions: I. All asteroids are planets II. All asteroids are stars III. All moons are stars IV Some rocks are stars

Fill in the following blanks with suitable words : A meteoroid becomes a…………………..on entering Earth's atmosphere.

Name the group of asteroids that cross Earth's orbit and also may come close to Earth or even collided with the planet?

The earth is slowing down and as a result the moon is coming nearer to it. The angular momentum of the earth-moon system is not conserved.