Today we are going to start a new topic in our Science lesson: FORCES.
Why the ball is moving in every case?
What are the people doing to move the ball?
And now, What is going to happen with the ball?
How is it going to move?
With all this previous information, Can you say what a force is?
LET'S MAKE SOME EXPERIMENTS TO IDENTIFY DIFFERENT KIND OF FORCES.
1. Let's take an elastic band, and tie something like a key in one part. Hold the elastic band from the opposite part. Try to identify what happens on it and why it happens.
2. Take a plastic pen, and some small pieces of paper. Rub very quickly the pen with something made of wool. Then you will move the pen closer to the papers. Try to identify what happens on it and why it happens.
3. Let's take two magnets and try to put them together. Try to identify what happens on them and why it happens.
4. Let's play with a car. Launch the car along the floor of a classroom, First do it very soft and then do it stronger. What has happened? When has it stopped later?
LET'S CHECK YOUR LEARNING
ABOUT THE KIND OF FORCES:
IF YOU HAVE MORE TIME HERE YOU CAN INCREASE YOUR KNOWLEDGE.
Experiments-forces :
ResponderEliminar1.Because the gravity attract each other.
2.Becuuse the electricity of the cotton,stick the paper.
3.Because is attract each other.
4.Because is more friction on one car than on the other.
Experiment forces
ResponderEliminar1. The gravity: Elastic band.
2. Electric force: plastic pen
3. Magnetic force: Two magnets
4. Friction: Push the car
EXPERIMENTS-FORCES:
ResponderEliminar1. When we put the key in the elastic band, the key goes down and the elastic band expand and makes bigger. In this experiment there is gravity force.
2. When we rub the pen in the hair and after we put the pen near de paper the paper is attracted to de pen. This is electric force.
3. When we put in the desk the magnets, they start to attract each other. They make a magnetic field. This is magnetic force.
4. If we shot soft the car the friction stop first the car and when we shot stronger the car, the friction stop the car more latter. There is friction.
Experiment forces
ResponderEliminar1. The gravity: Elastic band.
2. Electric force: plastic pen
3. Magnetic force: Two magnets
4. Friction: Push the car
experiment forces
ResponderEliminar1 the electic band is the gravity.
2-the pen,wool and hair is the electric forces bacuse rubbing it together with the pen.
3-the two magnets is the magnetic forces.
4- the pusch the car is the friction.
The forces
ResponderEliminar1º The elastic band moves because is elastic.
2ºBecause in the pen there are static electrisity.
3ºBecause the magnets has two poles: north and south and if you put the opposite poles, attact, but if you put the same pole repel is other.
4º the pusch the car is the friction.
EXPERIMENT FORCES
ResponderEliminar1.Because the gravity attract each other.
2.Becuuse the electricity of the cotton,stick the paper.
3.Because is attract each other.
4.Because is more friction on one car than on the other.
Experiment about forces.
ResponderEliminar1- Because the elastic band is elastic, and also because the gravity, pulls the keys down.
2- Because the electricity of the wool. attract the paper.
3- Because they attract each other.
4- Because in one have more fristion than the another.
Experiment forces
ResponderEliminar1 The gravity: Elastic band.
2 Electric force: plastic pen
3. Magnetic force: Two magnets
4. Friction: Push the car