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								Antenna    									 
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								1. one of the two long, thin feelers on the head of many insects and of some water animals such as lobsters 
								2. a metal rod or wire used to send and receive radio and television messages  | 
						
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								Balance									 
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								1. a state of being firm and steady 
								2. to stay in a steady position without falling 3. to hold something in a steady position without letting it fall  | 
						
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								Boulder									 
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								A large, rounded rock, resting on or in the ground									 
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								Cliff									 
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								A steep, high rock face with a sharp drop to the ground below									 
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								Joint									 
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								The place where two parts meet or come together									 
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								Machine									 
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								An object that is used to do certain kinds of work, which can have both fixed or moving parts									 
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								Motor									 
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								An object that provides the power to make something move or do work									 
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								Muscle									 
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								A part of the body that can be stretched or tightened to make the body move									 
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								Planet									 
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								A large object in space that moves in a regular path around the sun or some other star									 
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								Slope									 
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								1. a surface, a line, or a piece of land that is higher at one point than at another 
								2. to lie at an angle  |