Forces and Motion- Engage and Explore Activities

Name: ______Period ______Date: ______

PART A- ENGAGE

Complete the KWL Chart below after watching the video on Force and Motion. WRITE TWO THINGS IN EACH SECTION.

What I know / What I want to know / What I learned

PART B- EXPLORE

Activity 1 – Pushy Straw

1.  Stretch a rubber band around the middle of the cover of a hardcover book. Make sure the rubber band is straight.

2.  Hold the book steady by placing one index finger on the binding. Push a straw against the rubber band with your other index finger. The edge of the straw should dig into the rubber band.

3.  Push the straw until the rubber band stretches about 10cm. Then let go of both the book and the straw at the same time.

After you let go, what was the speed and direction of the straw?

Speed: ______

Direction: ______

Activity 2- Speed Patrol [Mass vs. Speed]

1. Each group will have one item from the list (marble; coin; ball; blown balloon; tape roll; toy car; textbook).

2. One representative from each group will position their object (marble/coin) at the top

of the ramp.

3. Release the object and let it roll down the ramp. Record the speed traveled by each

object from fastest to slowest (1-slowest to 7-fastest)

1______(SLOWEST) 2______3 ______

4 ______5 ______6 ______7______(FASTEST)

How does the mass of the object affect its speed? ______

What forces are applied? ______

Activity 3 – [The Wet Bomb]

1. Moisten a small piece of tissue paper with water and use it to plug the hole in the top of a water bottle.

2. Squeeze the bottle and observe what happens.

3. Repeat steps 1 and 2 with a larger piece of moistened tissue paper.

• State what happened in both instances. ______

• Explain the answer you wrote above. ______

Activity 4 [THE MASSIVE PUSH RACE COMPETITION]

1.  2 student volunteers (1 of small mass and one of larger mass) each sit on a chair with tennis balls on the legs.

2.  2 other student volunteers will push the chairs and observe which chair reached the opposite end of the classroom quicker.

3.  Volunteers will then switch positions; however this time, the chairs will be pulled.

Explain your observations. ______

How can you change the procedure to make your results more reliable? ______