MACHINES AND NEW TECHNOLOGIES ACTIVITIES 1. VOCABULARY Write on your notebook your own vocabulary of this unit: Machines, wheel, axle, lever, fulcrum, ramp, inclined plan, pulley, rope, wedge, tool, 2.- Look for the eight words related to the simple machines in the word search.
Write them. Q F A Z W S X E D C R 1. ___________and _________ 2. ____________ p_________
I
P
F U V T R A M P G B Y N L H L E V E R N U U J M C A
3. ________________________ 4. ________________________ 5. ________________________ 6. ________________________
I
C K O L P Z L X A C L N
R R U O J A R L Z X Y F U J
I
E
L H W H E E L U N H
V M M P G Q T Y W E T Y
I
I
E J
L F W Y J K L N D B
7. ________________________
G H W E D G E R Q T P Z K
8. ________________________
B N K K S E U T T O O L L
3.– On the line by each picture write the type of simple machine.
_______________________________
_______________________________
____________and ________________ and ______________________________
_______________________________
_______________________________
_______________________________
_______________________________
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_______________________________
_______________________________
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4.- Match the simple machine with its correct definition by writing the corresponding number in the answer column. Simple machines
Answers
Definitions
Lever
1. Something that reduces the friction of moving something.
Inclined plane
2. Something that can hold things together or lift an object.
Wedge
3. A ramp
Screw
4. Something that uses a rope and can change the direction of a force.
Wheel and axle
5. A rigid bar that pivots on a point called fulcrum.
Pulley
6. This can split an object apart.
5.– Observe the staircases and answer?
Staircase A is ………………. to use.
Staircase B is …….………… A
B
to use.
6.– Label these simple machines.
Wedge
Pulley
Inclined plane
Screw
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Lever
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7.- Look for the nine TOOLS in the word search. P S C R E W D R T S K N tweezers
Scissors
Stapler
F E X W X C V B
E N U T C R A C K E R P L Z X C V B N M R T K A S
Z S C Screw
V E R H
W P S D F E R W Q K O M S
E Screwdriver
I
I
Knife
I
S S O R S V S Z C
E Q S T A P L E R F C N R R A L G S H R
I
Y P R S E
S X E C R R F V T G E B W Axe
Corkscrew
Nutcracker
V E A Z W U J M
I
K W P H
8.– Classify the tools on exercise number 2. Lever
Inclined plane
Wedge
9.– Circle the fulcrum of this levers. Then label the effort (E) and the load (L)
It’s a ..............-class lever
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10.– Observe the picture and label the simple machines you can see. It’s a ........................
11.– Complex machines are made from two or more simple machines. Write the sentences.
I can see two ..........................
I can see ...
and ..............................................
I can see ...
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I can see ...
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12.– Complete the sentences with the correct answers. A. Machines are used to save ............................ effort
money
B. Compound machines are made up of ............................................. machines. simple
automatic
C. A computer is a ........................................ machine. simple
compound
D. A pulley is a ................................. machine. simple
compound
E. A nutcracker is made up of ..................................................... inclined planes
levers
F. A windmill works with ................................... gears ramps G. A lever is made up of three elements: load, effort and ......................................... wedge
fulcrum
H. A wedge is made up of two ........................................................ tools
inclined planes
13.– Label the parts of a bicycle shown in the drawings. Which simple or compounds machines are the y examples of?
Name: ...................................... Machine (s):
Name: ...................................... Machine (s):
Name: ...................................... Machine (s):
Name: ...................................... Machine (s):
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14.– Label the parts of this computer.
15.– Imagine that you have to do a mathematical calculation in class using your computer. Answer these questions. Which part can you use to introduce the data? Which part of the computer does the calculation? Where will the data and the result appear? What do you need to take the results home? What do you use to have in paper what you see on the screen?
16.– Complete the chart with examples. MACHINE CLASSIFICATION Classified by
the number of parts
Classified by
the energy they need
Classified by
what they do
Simple
Compound
Example:
Human energy Example:
Example:
Wind or water Example:
Fuel Example:
electricity Example:
A windmill Produce movement Example:
Produce heat or cold
Process information
Example:
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