January+16th,+2013

Homework: Reading: Read pages 21-24 in the Clotee book. Write down new vocabulary or tricky words (maybe due to Clotee's speech) Write down 2-3 "I wonder questions" Be prepared to take a quiz on this section of the story tomorrow.

Persuasive Essay Writing: [|Writing an Essay] [|Graphic Organizer]

Science Investigation Questions: [|Science for Kids] [|Gravity Video]

Think about the following statements and see if they apply to your responses.

A moving object will move at a constant speed in a straight line if no unbalanced force acts on it. An object changes its speed (accelerates) when an unbalanced force acts on it. A small force acting for a long time can significantly change the motion (speed) of an object. Speed is defined as a change in position divided by time An object that is speeding up or slowing down is accelerarting. Kinetic energy is energy associated with the motion of an object. As an object changes speeds its kinetic energy changes. Potential energy is energy related to the position of an object.

1. The hand warmer What happens to the temperature when you stop rubbing your hands together? Write down an example of how you can produce heat.

1.3 Rolling Around Are there any forces acting on the ball when it is rolling around the inside of the roll of tape. Why or why not? Write a description of the motion of the ball after the roll of tape is lifted. Do you think there are any forces acting on the ball after the roll of tape is lifted? Why or why not?

1.4 The Puck Launcher Describe the Pucks motion What force acted on the puck each time it was released? Describe how the puck's motion is different and how it is the same in the two trials. Give an example of a force that acts on an object. What is the force's effect?

1.5 Down the Ramp Describe the car's motion at position 1 Describe the car's motion at position 2

Compare the motions of the two cars and explain why they are different?

1.6 Suspended Bar What happens when bar 1 is near the suspended bar? What happened when you turned bar 1 and put it near the suspended bar? What happens to the compass needle when it's near the suspended bar? What are other ways to spin the suspended bar without touching it? What forces are acting here?