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Measuring Motion - orienteering- -bean run- -relays- Force and Motion 1.1: Understands that motion of an object can be described and measured

Description vs. measurement What is the difference between a description and a measurement? Description:WORDS Measurement:NUMBERS

MOTION Describe the following motions… FASTSTRAIGHTLEFT FASTCURVED DOWN SLOW STRAIGHT UP SPEEDSPEED DIRECTION

What direction words can you think of to describe the motion of an object? LEFT RIGHT DOWN UP

DIRECTION What ways can you think of to measure the direction of a moving object? WHAT ABOUT ANGLES? How would you use angles to measure the following motions?

DIRECTION Use angles to measure the motion of a cannonball shot straight up in the air. 90°

DIRECTION Use angles to describe the motion of a cannonball shot straight up in the air °

DIRECTION What if the object is not shot up into the air? What about marbles hitting each other when rolled on the ground? How would you use angles to measure the direction of marbles after knocking one marble with the other?

DIRECTION 45°

SPEED What words can you think of to describe the speed of an object in motion?

Speed What about miles per hour or kilometers per hour? Speeds are measured in units of length per time or…

SPEED How would you expect to measure the speed of an object in motion? How many tools might you need? What tools are good to measure speed?

SPEED You only need two tools at the most! One:Something to measure distance. Two:Something to measure time.

SPEED If a cheetah at top speed can run 50 meters in 2 seconds, what is the top speed of a cheetah?

orienteering Orienteering is a fun way to practice measuring direction and even speed. Orienteering is mostly used to navigate in areas where all you have is a compass and a map.

What is a compass? A device used for almost 1,000 years in order to navigate and map unknown lands and continents as well as seas. Still in use by sea captains, outdoorsmen, and anyone wanting an easy, fun way to measure direction.

Compass parts 360° of a circle N Magnetic needle that always points North Cardinal Directions N, S, E, W

Using degrees of a circle to measure direction Directions are measured as degrees from North. So, what angle corresponds to the direction East?

Using degrees of a circle to measure direction 90° West? 270° -90°

Build your own compass What you need: needle magnet plastic butter dish small piece of modeling clay toothpick cork marker

procedure 1)Cut the lid to the butter dish so that just 1 cm of the rim remains. LID

PROCEDURE 2)Attach small ball of modelling clay to bottom of dish and stick toothpick into the clay.

Procedure 3)Carve a small hole in the bottom of the cork.

procedure 4)Fill tub with water to just over the top of the toothpick and place cork on top of toothpick so it floats but is restrained by the toothpick.

procedure 5)Tap sharp end of needle on a magnet about 50 times and place it on the cork. It should swing around and point north.

Procedure 6) Put lid on and mark North. N

exercise 1)Mark the degrees of a circle on the lid. 2)Mark the cardinal directions on the lid. 3)Measure the direction of the classroom door. 4)Measure the direction your desk faces.

What you will need Compass Meter Stick Stopwatch or watch Paper and Pencil

Imagine… …You are an object in motion moving around the walls of your classroom. Using only a compass, stopwatch, and meter stick, measure your direction and average speed while moving around the building.

Bean drop run What you need: 5 beans Groups of 4 students Have one student stand still, one walk, one walk fast, and the other run. Have them drop beans at intervals of 1 second. Measure the distances between beans and see the difference in speeds.

exercise 1)Who had the beans that were closest together? 2)Who had the beans that were farther apart? 3)What relationship did the bean distance have to the speed of the runner?

Clas relay race What you need: Groups of students 1 stopwatch per group. Students run the same distance while group members time them.