FORCES (FUERZAS)

PINCHA AQUI

JUEGOS
VIDEO about force, work and energy

PUSH AND PULL
JUEGA CON EL MAGNETISMO
RESUMEN DEL TEMA TRADUCIDO
JUEGA CON LAS FUERZAS
JUEGA
TEST FORCES
TEST FORCES

EXAMEN FORCES

1. Answer the questions:
- When something starts to move a force can make it, What is this called?
- What is the name of the force which slows down a man falling with a parachute?
- whichs are contact forces?
- What is the name of the force that helps things float?
- what are balance forces?
- What is the name of the force that pulls objects to Earth?
- What is the name of the force that slows down moving objects?
- whichs are non contact forces?
- what are unbalance forces?

2. Choose the correct answer:
- A boat floats because .....
. the weight of the ship is balanced by the upsthrust of the water.
. gravity keeps it on the water.
. has a large mass and small volumen.

- Forces can be:
. pushes only
. pulls only
. pushes and pulls

- Why does an astronaut weigh less on the Moon than on the Earth?
. the Moon has no atmosphere.
. the Moon has no gravity.
. the force of gravity is weaker on the surface of the Moon than on the surface of the Earth.


- What can we say about the forces on an object that is not moving?
. there must only be one force acting on it
. the forces must be balanced
. it must be very heavy

- What is the unit of weight called?
. the newton, n
. the newton, N
. the kilogram, kg

- Where would you feel heaviest?
. The Earth
. The Moon
. You would feel equally heavy on both


- Which of the following is TRUE?
. Gravity only acts through air, not through water or land
. Gravity does not act on aeroplanes flying in the sky
. Gravity always acts towards the centre of the earth

- Which of these is not a force?
. mass
. Weight
. gravity

- Which of the following statements about unbalanced forces is NOT true?
. They can change the direction of a moving object
. They can slow down an object
- They have no effect on an object
. They speed up an object

- Which of the following is NOT non-contact force?
. A push
. Weight
. Magnetism

- Which of the following is NOT contact force?
. A push
. Weight
. Magnetism



3. Complete:
- The force that makes things fall to the center of Earth is called ....................
- ....................forces do change the way something is moving.
- ...................... forces can make objects start to move, ........, speed up, slow ........., or change direction, ...................
- Balanced forces:Two forces applied to an object are .............. and ............... .
- When the forces are .....................the object doesn´t move.
- When the forces are......................the object moves.
- Magnets have a force called................... .
- Magnetism is a .................... force
- Some magnets are natural. For example...................... .
- Most magnets are man-made. They are made from ................and ............. .
- Magnets create a ..........................    ............. around them.
- Opposite poles of a magnet........................ .
- Same poles of a magnet........................ .
- Gravity is a ............., pull force that pulls towards .................centre.
- Mass is the ............... of ................ in an object.
- Sir Isaac ............., an english scientist, discovered ................. .
- Upthrust is a ................, push force applied by ................ and ................ .
- Archimedes, an Ancient greek scientist, discovered .................
- Upthrust is an opposite force to ...................... .

4. what´s push or pull?