Question

chapter 1 and 1 review
ch 1:1 the math code - know what the variables mean, what their units are and how to read the math (including how to rearrange equations).
mv = m ______ v
fnet = f ______ a
t₁ + t₂ = t₃ ______ t₃
mv = m ______ v
δd/δt = δd ______ δt
match the variables with the quantities.

1. a = __________ 40 sec
2. s or v = __________ 1 meter/sec
3. d = __________ 45 m/s²
4. v = __________ 45 meters
5. t = __________ 22 newtons

equation: δ = δd x t, solve for δd
equation: v = δd/δt, solve for δd
solve for δt
ch 1:2 speed - know how to use and manipulate the speed equation to calculate speed, distance, and time
a car travels 10 m/s for 5 secs
calculate how far it traveled
variables:
formula:
solution:
you travel from maine (100 miles away) to vermont (300 miles away), in 4 hours. calculate your speed.
variables:
formula:
solution:
a bike goes 12 m/s for 6 seconds.
calculate how far the bike traveled.
variables:
formula:
solution:
you’re meeting a friend at 6 p.m. she lives 180 miles away. the speed limit is 60 mph. when do you need to leave?
variables:
formula:
solution:
ch 1:2 and 1:3 experiments and variables - know the scientific method; know what makes a good experiment; know the vocabulary; know the difference between an experimental variable and a control variable.

1. experiment
2. data table
3. trial
4. variable
5. procedure

a. one time an experiment is run.
b. how an experiment is actually conducted.
c. a setup used to gather data and knowledge.
d. a list of information from an experiment.
e. a part of an experiment that can be changed or manipulated.
experimental or control variable:
variables that you keep the same in an experiment:
you are studying the affects of pressure on gas absorption in a liquid.
the amount of gas pressure would be:
a variable that you are studying in an experiment:
the type of liquid would be:
you have only one of these:
the room temperature would be
you can have many of these:
the type of container would be
copyright © 2004, c. step

Explanation:

Answer:

1. C
2. D
3. A
4. E
5. B

Experimental variable
Control variable
Control variable
Control variable