Hoja – Resumen de la evaluación · Web view2020/03/01 · Ferrous metals are common and...

Colegio María Auxiliadora- BéjarAsignatura: TECHNOLOGIESCurso: 1º ESO

Ejercicios de recuperación Segundo Trimestre

CRITERIOS DE CALIFICACIÓN: Cada pregunta tiene un valor de 1 punto. La nota final del examen se hará sobre diez puntos.Nota: Los ejercicios de recuperación computan como un 30% de lanota final. En el caso de no ser entregados, el examen supone el 100% de la nota.

ALUMNO: NOTA:EJERCICIOS: NOTA:CALIFICACIÓN FINAL:

QUESTION 1 Match each property with its definition:

a) They can resist forces and don´t become deformed easily. 3. Tough

b) Can be made into wire or into sheets 4. Plastic and elastic

c) Metals don´t break easily 2. Strong

d) Some metals can be bend and return to its original shape. 1. Ductil and malleable

e) Can be welded to other metallic objects. 5. Fusible

QUESTION 2 According to the image, write down each property of metals:

_____________________ _____________________

_____________________ _____________________

QUESTION 3 Write TRUE or FALSE

a) Metals can´t be processed to be used again.

b) Metals can react with oxygen in water, but not in air.

c) Some metals present a danger to human beings and the environment

d) Lead is one of the most toxic metals.

QUESTION 4 Complete the text with the following words: ore, surface, explosives, drill

Metals are obtained in ___________________________ mines or underground mines. To extract the mineral from the rock we can use ___________________________, an excavator or a ___________________________. The minerals are separated into ___________________________ and gangue.

QUESTION 5 There are two mistakes in the sentence. Correct them and write again the sentence.

The metal is extracted from the gangue in an ironworks through physical and thermical processes

Gloria Pérez Cantos


___________________________________________________________________________________

___________________________________________________________________________________

QUESTION 6: Write true or false:a) Non-ferrous metals contain ironb) Ferrous metals are common and expensivec) An alloy is a mixture of two or more chemical elementsd) An iron alloy is a mixture of iron and woode) Steel is very hard and strongf) Cast iron is not very resistant.

QUESTION 7 Write two examples of shaping techniques used to modify the shape of the unprocessed metals

_____________________________________________________________________________________

QUESTION 8 Order the following steps in the steel making process:

1. Iron is crushed and sieved to separate the gangue from the ore

2. Slag is obtained (secundary product)

3. Iron is washed to eliminate any impurities.

4. Pig iron is taken to a converter to eliminate impurities

5. The ore is mixed with coke and limestone, and then put into a blast furnace over 1500º C.

QUESTION 9 Order the following steps in the process of casting:

1. The mould and metal are left to cool.

2. The metal is heated to melting point.

3. The solidified piece is extracted

4. Liquid metal poured into the mould

QUESTION 10 Write one heavy metal, one light metal and one ultralight metal

_____________________________________________________________________________

QUESTION 11 Write the step: marking, cutting, drilling, shaping, rough finishing, joints and finishing with the appropriate tool.

Guillotine________________________________________Drill____________________________________________Riveter__________________________________________Lathe___________________________________________Polishing________________________________________Scribbers________________________________________File_____________________________________________Welding_________________________________________Compass________________________________________Chisel__________________________________________Sander_________________________________________Circular saw_____________________________________



Coating_________________________________________Awl____________________________________________

QUESTION 11 Write three different types of forces that can be found in nature._____________________________________________________________________________________

QUESTION 12 Complete the following definition with the words: deform, rest, force, state.

A _______________ is anything that can _______________ a body or change its _______________

of movement or _______________.

QUESTION 13 Write TRUE or FALSE

a) A structure prevents a body from breaking or becoming too deformed. b) They may be natural structures or artificial structuresc) Natural structures are human-maded) The forces that act on a structure are called loads.

QUESTION 14 Match each stress with its definition:a) Torsion 1. Forces try to compress a body b) Traction 2. The forces act like two scissors blades c) Compression 3. Forces try to stretch the body.The body tends to become longer d) Shear or cutting 4. Forces try to bend a body e) Bending 5. Forces try to twist a body

QUESTION 15 Label the stresses each element bears:

QUESTION 16 What are the three conditions that structures have to meet to fulfil their function?

_________________________________________________________________

QUESTION 17 Complete the sentences with the correct word from the list: stability, tension, rigidity, resistance:

a) _______________ is a property of pyramidal structures.

b) The internal stress of bodies subjected to forces is alsa called __________________

c) The_________________of bar structures is obtained through triangulation.

d) We say that a body has _______________when it doesn´t break when a stress is applied to it.



QUESTION 18: Clasify these artificial structures into massive, vaulted, lattice, triangulated, suspended, pneumatic or geodesic:

a) ___________________________________

b) ___________________________________

c) ___________________________________

d) ___________________________________

e) ___________________________________

f) ___________________________________

QUESTION 19: VocabularyFuerzaEstructuraTracciónDobladoCompresiónEstabilidadRigidezResistenciaGravedadAbovedado

QUESTION 20 Complete the following definition with the words: tasks, motions, effort, devices.



Mechanisms are ___________________ that transmit and convert forces and ________________ from a driving force to an output element. They enable us to carry out certain _______________ with greater comfort and less _____________.

QUESTION 21 Complete the following scheme

QUESTION 22 a) Write down the LAW OF THE LEVER. What is the meaning of each of the letters?

______________________________________________________________________________

______________________________________________________________________________

b) A boy weighting 35 kg and a girl weighting 40 kg are sitting on a seesaw. The girl is 2 m from the fulcrum. At what distance must the boy sit from the fulcrum to balance the seesaw?

QUESTION 23 Classify the different types of levers and label the positions of F, R and the fulcrum

a) b)

c) d)

QUESTION 24 Write true or falsea) A lever is an elastic bar that it is used with a point of support or a fulcrumb) A fixed pulley is a wheel that rotates around an axle that is fixed to an immobile surface.c) A fixed pulley is balanced when the effort, F, is equal to the load, Rd) A moveable pulley has two pulleys, one is fixed while the other can move in a

reciprocatingn direction.

QUESTION 25 Match the definition with the mechanism:



a) Pulleys with belt 1. Set of wheels that have teeth.

b) Friction drive 2. Two wheels that are a certain distance apart

c) Coghwheels 3. Made up of two or more wheels that are in contact

QUESTION 26 Match the mechanisms with its formulas:

a) Pulley trains with belts 1. N4/N1 =(D1XD3)/(D2XD4)

b) Gear train 2. N1 x Z1 = N2 x Z2

c) Gear mechanisms with a chain 3. N4/N1 =(Z1XZ3)/(Z2XZ4)

QUESTION 27 Look at this friction drive system. What is the velocity rotation of the driven wheel if the drive wheel is moving at 20 rpm?

QUESTION 28 VocabularyFuerza motriz

InputMovimiento de rotación

Reciprocating motionPalanca

FulcrumPolea fija

cogwheelsMecanismo biela-manivela

Gear

QUESTION 29

Complete the definition with the words: forces, phenomena, caused, charge.

Electric ___________________ is a property of all objects and is responsible for electrical

__________________. These phenomena are ________________ by the electrical

__________________ of attraction and repulsion

QUESTION 30

Say if the following statements are true or false.

a) Two objects with the same charge repel each other.

b) Two objects with different charge repel each other.

c) Electric current is a continuous movement of electrons.

d) There must be a balance between two points of a conductor.



QUESTION 31

Choose se the correct word:

a) Plastic and wood allow/don´t allow electric current to pass through them.

b) Insulators are used so that people don´t get electric charges/shocks.

c) Electric wires are usually made of copper/rubber and have wooden/plastic insulation.

d) Light switches are usually made of metal/plastic because it is a good conductor/insulator.

e) Electric currents are created by the movement of protons/electrons.

f)

QUESTION 32

Classify the following materials into conductors or insulators:

a) Silver: ________________________

b) Plastic: ________________________

c) Wood: ________________________

d) Ceramic: ________________________

e) Copper: ________________________

QUESTION 33

Draw the following circuit:

QUESTION 34

Match each component with its function:

a) A generator 1. something to transform electrical energy

b) A receptor 2. Something to move electrons

c) A conductor 3. Stop, start or change the direction of the

electric current

d) Control components 4. A wire.

QUESTION 35

Draw the following symbols:

▫ Push switch

▫ Motor

QUESTION 36

Match the effects of the electric current with its definition:



a) Heat 1. Motors transform electrical energy into this effect.

b) Light 2. When the temperature of an object increases a lot, this effect begins to

appear.

c) Motion 3. Electrons crash into the atoms and part of the energy is transformed

into this effect.

QUESTION 37

Complete the following table:

ELECTRIC QUANTITIES SYMBOL UNITS

Charge

volts

I

R

QUESTION 38

Find the missing quantity using the Ohm´s Law, writing its formula in each case:

a) V= 9 V R= 4,5 Ω I=

b) R= 4 Ω I= 3 A V=

c) V= 1,5 v I= 0,5 A R=


Hoja – Resumen de la evaluación · Web view2020/03/01 · Ferrous metals are common and...

Documents

Transcript of Hoja – Resumen de la evaluación · Web view2020/03/01 · Ferrous metals are common and...