4. Collecting the sun's energy with solar panels, heating water with that energy, and storing the heated water to use the energy later. dont know what this is its for a cross word in physical science and it starts with an a

they should be similar or the same

the higher the current the higher the mag field around it the higher the influence on the compass

momentum of soft ball three times less than baskey ball

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )