Answers – Open Book
1). What is the term for work you put into a machine?
Ans: work input
2). What is weather?
Ans: the state of the atmosphere at a given time and place
3). What are the two body systems that are most responsible in helping you lift things?
Ans: muscular and skeletal
4). What is the center of a hurricane called?
Ans: the eye
5). The measure of force with which air molecules push on a surface
Ans: air pressure
6). How is a convection current created?
Ans: warm air rises and cold air sinks
7). Why does warm air rise?
Ans: it is less dense
8). What changes when you go to the moon?
Ans: weight
9). A seesaw is what type of simple machine?
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, Ans: class 1 lever
10). What is a gene?
Ans: segment of DNA that codes for a protein
11). Scientist that developed the 3 laws of motion
Ans: Sir Isaac Newton
12). What is mass?
Ans: the amount of matter in an object
13). What carries blood throughout the body?
Ans: blood vessels
14). A cylinder with an inclined plane wrapped around it
Ans: screw
15). A simple machine consisting of 2 circular objects of different sizes
Ans: wheel and axle
16). Transportation is the main function of which body system?
Ans: cardiovascular system
17). What is the equation for speed? speed = ?
Ans: distance / time
18). What does autotrophic refer to?
Ans: an organism that makes its own food
19). Which single-celled organism is both heterotrophic and autotrophic?
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