The atmosphere is made up of several layers of air. the bottom two layers are the troposphere and the stratosphere. how does the troposphere differ from the stratosphere?

True or false: the revolution of the earth creates day and night as it rotates around the sun

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?

How does the formation of intrusive and extrusive igneous rocks differ?