Forces and Motion
What is friction?
What is, A FORCE THAT RESISTS OR STOPS MOTION
What is the first law of motion?
What is AN OBJECT AT REST WILL REMAIN AT REST UNTIL IT IS ACTED ON BY AN UNEQUAL FORCE AND AN OBJECT IN MOTION WILL REMAIN IN MOTION UNTIL ACTED ON BY AN EQUAL FORCE.
What is kinetic energy?
What is ENERGY OF MOTION
What is potential energy?
What is STORED ENERGY
What is mechanical energy?
What is AN OBJECT'S POTENTIAL ENERGY PLUS ITS KINETIC.
EXAMPLE: A WRECKING BALL HAS MECHANICAL ENERGY WHEN IT HITS A WALL OR BUILDING.
Why would adding wheels to an object being pushed make it easier?
What is, ADDING WHEELS WOULD REDUCE THE FRICTION BETWEEN THE OBJECT AND THE GROUND.
What would two balloons that have been electrically charged by being rubbed on a person's head do when held near each other?
What is, THEY WOULD REPEL EACH OTHER BECAUSE THEY HAVE THE SAME CHARGES.
What are some examples of mechanical energy?
What is: PUSHING A DOOR OPEN, THROWING A FOOTBALL, HAMMERING A NAIL INTO A BOARD
What is energy?
What is THE ABILITY TO DO WORK, CAUSE MOTION, OR CREATE CHANGE.
What is chemical energy?
What is STORED ENERGY IN A SUBSTANCE THAT IS RELEASED WHEN BONDS BETWEEN ATOMS ARE BROKEN.
What would two magnets with "N" and "S" facing each other do?
What is THE WOULD ATTRACT TO EACH OTHER. OPPOSITES ATTRACT.
Would an incline make it easier or harder to push a cart? explain.
What is HARDER BECAUSE YOU WOULD BE PUSHING AGAINST GRAVITY WHEN PUSHING UPHILL.
What are some examples of potential energy?
What is: A BOOK RESTING ON A SHELF A ROCK ON THE LEDGE OF A MOUNTAIN A BOTTLE OF WATER SITTING ON A DESK
What are some examples of kinetic energy?
What is: A BALL ROLLING DOWNHILL, DANCING, RAIN FALLING FROM THE SKY, ANYTHING THAT IS MOVING )
How does heat energy MOVE?
What is, IT TRANSFERS TO COOLER AREAS. IT WILL ONLY STOP TRANSFERING WHEN THE COOLER AREA REACHES THE SAME TEMPERATURE OF THE HEAT SOURCE.
What is the second law of motion?
What is THE ACCELERATION OF AN OBJECT IS DUE TO ITS MASS AND THE FORCE THAT APPLIED TO IT. EXAMPLE: A TENNIS BALL THAT IS FLICKED WITH YOUR FINGER WILL MOVE ABOUT 5 FEET, BUT A BOWLING BALL THAT IS FLICK WITH YOUR FINGER MAY NOT MOVE AT ALL.
What is the third law of motion?
What is FOR EVERY ACTION THERE IS AN EQUAL AND OPPOSITE REACTION. EXAMPLES: WHEN SKATEBOARDING TO MOVE FORWARD YOU PUSH BACKWARDS WITH YOUR LEG AND FOOT. WHEN PADDLING A BOAT YOU PULL BACK TOWARD YOURSELF WITH THE PADDLE TO MOVE FORWARD.
What forms of energy do you get from a light bulb?
What is HEAT AND LIGHT
What kind of energy would a sailboat or windmill need to move it?
What is WIND ENERGY.
How can water be a source of energy?
What is THE WATER HAS TO BE MOVING TO CREATE ENERGY. IT CAN TURN THINGS SUCH AS WATER TURBINES OR WHEELS THAT CAN THEN PRODUCE ELECTRICITY
Mr. Wallace was pushing an empty shopping cart into the supermarket one windy day. He was have problems controlling the cart on the way in. After getting groceries and leaving the store it was just as windy. Only this time he noticed that he was not have trouble controlling the cart. Why? Please address both situations "going into the store" and "leaving the store"
What is ON THE WAY INTO THE STORE THE CART DID NOT HAVE VERY MUCH MASS AND WAS EASILY MOVED BY THE WIND. ON THE WAY OUT OF THE STORE THE CART HAD GROCERIES IN IT AND THEREFORE HAD MORE MASS AND WAS NOT MOVED EASILY BY THE WIND.
How does newton's 1st Law of Motion apply to objects in outer space?
What is THE 1ST LAW OF MOTION IS ONE THAT STATES AN OBJECT AT REST WILL REMAIN AT REST AND AN OBJECT IN MOTION WILL REMAIN IN MOTION UNLESS ACTED UPON. IN SPACE THERE IS NO AIR OR GRAVITY SO THERE IS NOT FORCE TO ACT ON A MOVING OR AT REST OBJECT.
What forms of energy do you get from fire?
What is HEAT ENERGY, LIGHT ENERGY, EVERY NOW AND THEN YOU MAY GET SOUND ENERGY WHEN THE WOOD POPS
What are some objects that use electrical energy?
What is REFRIGERATORS, COMPUTERS, CELL PHONES, T.V., LIGHTS, BLENDERS. ANYTHING YOU NEED TO PLUG IN
How does light energy travel and what is refraction?
What is LIGHT TRAVELS IN STRAIGHT LINES. REFRACTION IS THE BENDING OF LIGHT THROUGH AIR AND LIQUIDS. LIGHT MOVES SLOWER THROUGH LIQUIDS BECAUSE IT IS MORE DENSE THAN AIR