Write the inverse fraction and the opposite fraction of 2/5
5/2 or -2/5
100
How many edges has a cylinder got?
the answer is 0 (none)
100
Say the name of the saw you use to cut plywood
Fretsaw or Coping saw
100
The source of energy related to the mass of plants is called..
Biomass
100
The property of matter which tells us how much mass there is in an unit of volume is called...
Density
200
Express this decimal number: 0'25 as a percentage and as a simplest fraction.
25% and 1/4
200
What is the name of a solid with these characteristics?
- Six isosceles triangles as lateral faces
- A rectangular hexagone as base
A hexagonal (regular) pyramid
200
You use this tool when you want to make deep holes in the wall
Electric drill or drill
200
What is the name of the energy an object has because of its motion?
Kinetic energy
200
What is the smallest particle that makes up matter?
The Atom
300
Work out the value of X in these fractions:
12 / X = 1 / 4
The answer is 15
300
Say the formula of the volume of the sphere
4/3 ∏ r 3
(four thirds multiplied by pi, multiplied by R cubed )
(four multiplied by pi multiplied by R divided by three)
300
It is used to protect your table in the technology room
Chipboard
300
The temperature at which a solid changes into a liquid is called...
Melting Point
300
The state of matter that always has its own shape is a ....
Solid
400
After spending 7/15 of my money, I have 16 euros in my pocket. How much money did I have in the beginning?
The answer is 30 euros
400
If the legs of a right-angled triangle measure 3 and 4 cms, How much does the hypothenuse measure?
the answer is 5 cms
400
The drawing you do to express basic ideas is called
Sketch
400
The way in which heat energy is transfered into solid is called...
Conduction
400
In which states of matter is used convenction to transfer heat?
In Fluids (liquids and gases)
500
Yesterday I had 30 euros. I spent the third part on a ticket for the cinema and 2/5 of the reminder at Mc Donalds.
How much did I have when I got home?
The answer is 12 euros
500
What is the inscribed angle value if its central angle is 70º?
the answer is 35º (thirty five degrees)
500
This object is used to hold firmly the piece that you are going to cut or file
Vice or G-clamp
500
What is the unit of energy in the International System of Units?
Julio
500
What is produced when a kind of matter becomes a different kind of matter?