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Science Book Interactive Notebook Force and Motion Glossary Pencil Listening ears

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Get your Force and Motion Glossary out! Find the word: Motion Write the definition: The action of changing place or position (moving).

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Motion is everywhere: You move everyday in one way or another. Walking down the hallway Roll over in bed Heart Beats Eyelids blink up and down

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With your shoulder partner, think of all the ways you see motion everyday!!!! Create a list to be turned in at the end of class! Write your names on it. This is your ticket out the door.

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Motion is caused by force. What is force ?

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Get your Force and Motion Glossary Out! Find the word: Force Write the definition: Force is a push or pull that acts on an object.

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Can there be different kinds of motion? YES!!!!

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Objects can travel in a straight path. Baseball player racing to home plate. Trains on a track.

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Objects can travel in a curved path or circular motion. A car turning a corner. The Earth moving around the sun.

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Objects can travel back and forth. A guitar player plucks a guitar string. A rubber band that has been plucked.

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Get your Force and Motion Glossary out! Find the word: Speed Write the definition: Speed is the rate at which an object changes position.

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Speed is the main way we describe motion. Speed is how far an object moves during a certain amount of time. Average speed= Distance/ Time

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If I say: The train traveled 60 miles per hour (mph). This means: The train traveled a distance of 60 miles in one hour. If I say: Bob types 50 words per minute (wpm). This means: Bob can type 50 words in one minute of time.

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With your shoulder partner, think of other speeds you have heard of. On the same paper as your first list create a second list to be turned in at the end of class! Write your names on it. This is your ticket out the door.

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The speed of an object depends on the force applied to the object and the mass of the object. Which do you think would have a faster speed? A 2lb rock falling off of the Empire State building. A 10lb rock falling off of the Empire State building.

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A 10lb rock falling off of the Empire State building. The rock with the larger mass would fall more quickly than a smaller rock.

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An object with a greater mass will require a greater force to move it. It will take more force to move a car than a book. Why? The masses are very different. The car has a much greater mass.

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If you have two objects with the same amount of mass, but a stronger force is applied to one? Which will travel fastest? The object with the greater force applied will travel faster. The force applied to an object, affects its speed.

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Gravity pulls every object on Earth towards the Earths center. Because of gravity, the Earth is pulling on objects without even touching them. An objects weight is the amount of gravitational force between it and the Earth.

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On your sheet of paper answer the following question: If we were to travel to other planets, would our weight change? Why?

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The gravitational pull of an object to the earth is called weight. We measure weight with a scale. Where have you seen a scale before? The scales we use in our classroom are called spring scales, because they use a spring to determine the weight of an object.

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Magnetism is a force that pushes and pulls on other objects. This force is greatest at the magnets poles. Materials that are attracted to magnets, will pull towards the magnet.

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The north pole of one magnet will attract the south pole of another magnet. Opposites attract!!!! The north pole of two magnets will push away. So will two south poles!

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Turn to your shoulder partner and discuss: How do you think static electricity could be a force? You have 1 minute! GOOOOOO!

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Static electricity causes a build up of charges. Just like with magnets, opposites attract! Positive charges are attracted to negative charges and can cause a pull between the two objects. Also like magnets, like charges repel from each other. This also causes motion as the two objects move away from one another.

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Friction is the force that results when two materials rub against each other. Friction slows down the motion of an object or it stops it from starting to move.

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Walk around in your shoes. Slide your feet across the floor. What does it feel like? Take off your shoes! Now slide around the floor in your socks. Is there a difference?

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Why do you think there is a difference when you rub your feet on the carpet and when you rub them on the floor? What could cause this difference? Would it be easier to run in your socks or in your shoes? Why?

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Friction causes motion to slow or stop or not move at all. Friction is a force! The texture, shape, or speed of one object can affect the amount of friction with another object.

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What do you think of when you hear the word work? To most people, work reminds them of a job or career. The scientific meaning of work is much different. The energy used when a force moves an object.

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If the force applied to an object does not make the object move, then no work has been done. Holding an object in place can require a force, but since the object did not move, no work is done.

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