1. Describing and Determining Motion

2. Describing Motion Reference Points
An object is in __MOTION__ if its distance from another object is changing.
Reference Points
A __REFERENCE POINT__ is a place or object used for comparison to determine if something is in motion.
__STATIONARY__ objects make good reference points
(0:58) - How do you know these kittens are flying or in motion?

3. Relative Motion Measuring Distance
The Earth moves at the speed of __30 KM__ every second.
Measuring Distance
__INTERNATIONAL SYSTEM OF UNITS__ system used to for a universal measurements.
The SI unit of length is the __METER__.
Centi- means _ONE HUNDREDTH_. There are 100 __CENTIMENTERS__ in a meter.
Milli- means __ONE THOUSANDTH__. There are 1000 __MILLIMETERS__ in a meter.
Kilo- means __ONE THOUSAND__. There are 1000 __METERS__ in a kilometer.
BrainPop – Metric Unit (3:23)
BP – Metric vs Customary (2:46)

4. Calculating Speed The Speed Equation
If you know the __DISTANCE__ an object travels in a certain amount of __TIME__, you can find its speed.
__SPEED__ of an object is the distance the object travels per unit of time.
The Speed Equation
Speed = __DISTANCE__ / __TIME__
25 Mi/h is 25 __MILES__ in 1 __HOUR
BrainPop – Distance, Rate (Speed) & Time – 3:36

5. Average Speed Instantaneous Speed
__TOTAL DISTANCE__ / __TOTAL TIME__ = Average Speed
5 miles in 2 hour, 15 miles in 3 hour what is it’s average speed? __ = 20 miles, 2 +3 = 5 hours So, 20 miles/5 hours= 4 miles / hour___.
Instantaneous Speed
__INSTANTANEOUS SPEED__ is the rate at which an object is moving at a given instant in time.

6. Describing Velocity
When you know both the __SPEED__ and __DIRECTION__ of an object’s motion, you know the __VELOCITY__ of the object.
Speed in a given direction is __VELOCITY__.

7. Graphing Motion Calculating Slope
The steepness of a line on a graph is called __SLOPE__
Calculating Slope
Slope = __RISE__ / __RUN__
The __RISE__ is the vertical difference or the __UP__ and __DOWN__
The __RUN__ is the horizontal difference or the __LEFT__ and __RIGHT__
Videos
BrainPop- Slope and Intercept – 3:53

8. Different Slopes __HORIZONTAL__ line means no speed change
Steeper the slope the __FASTER__ the movement
__HORIZONTAL__ line means no speed change
Gradual Decrease in speed
Constant increase in speed
Decrease, constant (no change), increase
No change in speed