| A | B |
|---|
| lunge | sudden forward movement |
| aghast | shocked and afraid |
| pandemonium | wild confusion |
| frantic | very excited because of great fear |
| exhorting | to ask earnestly and strongly |
| tethered | attach an animal to a rope or chain |
| expedition | a journey for some specific purpose |
| sledges | vehicle that slides on ice skates |
| interpreter | person who can explain meaning of words |
| lead | long strip of water through a field of ice |
| ice floe | a large sheet of floating ice |
| gravity | force that causes smaller bodies to move toward center of larger ones |
| atmosphere | gases surrounding any heavenly body |
| meteorites | chunk of matter from outer space that reaches earth |
| particles | very little bit of material |
| orbit | path of heavenly body around another body |
| comet | a body of gas, frozen ice, dust particles |
