_______________ is when two objects are equal in weight. Your job is to balance all of these objects in the balance scale using counting bears. See how many counting bears you need to balance the scale. Objects Forces and Motion # of Counting Bears Glue Stick Book Marker Shoe Name: Pencil Box ______________________________ Bottle of Water Scissors 16 Which object took the most bears to balance? _____________________________ 1 The custodians came to school this morning and found several suspicious boxes in our classroom. They were too scared to move the boxes, so they need your help! They are unsure of the contents of the boxes or where they came from. Your job is to move the boxes to the marked spot. Since we don’t know what’s in the boxes, you can not touch the box when you’re moving it. Then we can call the office to come collect the boxes. Magnets have a north and south pole. The poles are at opposite ends of the magnet. The poles have the strongest pull (force) on the magnet. S N What happens when you put 2 magnets together? 1. Wear your gloves and safety goggles! 2. Look at the box. Predict from where the package came. I think... S N S N Opposite poles _______________ or pull. ____________________________________ ____________________________________ 2. Gather any materials from around the classroom that you may need to move the box. 2 3. Work as a team to plan how you’re going to move the box. S N N S Like poles ________________ or push. 15 A __________ is an object that will attract, or pull, things made of iron. Which tools didn’t work? Do NOT put a magnet near a computer! Let’s test it! Find objects in our room that are magnetic. Draw a picture and write the names of the objects. Which tools moved your box? Did you use PUSH and/or PULL? How? How did weight affect the way you moved your box? 14 3 What is motion ? If something is moving, it is in _______________. Think about our classroom and the school. What are some things that have motion: What did you learn about your house? ___________________________________ Did it matter which way the wind was blowing? ___________________________________ What would you change about your house next time? ___________________________________ Illustrate the best house design. 4 13 “ I ’ l l h u f f, a n d I ’ l l p u f f, a n d I ’ l l b low yo u r h o u s e d ow n ! ” The Big Bad Wolf is coming to blow your house down! You are the little piggies, and you need to create a house that the Big Bad Wolf can’t blow down. Things can move in different ways. Some objects may move in a straight or curved path, in a zigzag, or in a circle. How do these objects move? Toy Car ____________________ Gather materials and build your house. List the materials you used to build your house. Cone 1. _______________________________ ____________________ 2. _______________________________ 3. _______________________________ 4. _______________________________ Clock ____________________ 5. _______________________________ Egg Why do you think your house will not fall down? _______________________________________________ ____________________ _______________________________________________ Piece of Paper 5 12 ____________________ A _______________ makes something move or stop moving. Every time you move an object you use force. Use a straw to try and move each object. Try to blow and suck on the straw. Does the object move? Object Push Pull ______________ and _____________ are forces. Marble Yes/No Yes/No Di Yes/No Yes/No When you ____________ something, you are moving it away from you. Balloon Yes/No Yes/No Pencil Yes/No Yes/No Feather Yes/No Yes/No Book Yes/No Yes/No Toy Car Yes/No Yes/No Ball Yes/No Yes/No Which object moved the farthest? When you ___________ something, you are moving it closer to you or with you. ___________________________________________ Did you push or pull it? ___________________________________________ What force moved the objects? ___________________________________________ 6 What type of force is wind? ___________________________________________ 11 Let’s explore! Are there forces that move objects without touching them? Think of a way you use a push at home. Draw a picture and write a sentence. Make a hypothesis. Yes/No How can gravity make things move? _____________ is a force that pulls things straight down to the ground. What did gravity do to your car? ___________________________________________ Direction Think of a way you use a pull at home. Draw a picture and write a sentence. is where something is pointing. Which direction was your car pointing? ___________________________________________ 10 Draw a picture of your car at the end. 7 It’s CRASH DAY!! Vrooom Vrooom Materials ramp car stopwatch pencil lab notebook cubes Get your engines started! Today you are designing a ramp to show how fast a race car will travel from the start line to the finish line! Gather your materials and begin to build a ramp that will show the fastest speed for your race car. You must try 3 different heights and time your car as it travels from start to finish! Ramp Height 1. Run Ramp Height 1 1 2 2 1 1 2 2 1 1 2 2 At which ramp height was your car the fastest? What force is allowing your car to go down the ramp? ________________________________________ 8 3. 4. Run Total Run Time ________________________________________ 2. We learned yesterday that the height of our ramp affects the speed of our car. Now our class will see how force affects the motion of our crash test man. How did the placement of your ramp change the speed of your car? ________________________________________ Distance Man Traveled (cubes) What was the farthest distance our man traveled? _________________________________________ Why? _________________________________________ 9