Biyernes, Nobyembre 25, 2011
Lunes, Nobyembre 21, 2011
Sources Of Energy
what are the sources of energy?
ans:
a.)fossil fuels
examples:wood,coal,oil,natural gas,biomass
b.)geothermal energy
c.)nuclear fissions
d.)solar energy
e.)hydroelectric energy
examples:dams,waves,tides
f.)wind energy
ans:
a.)fossil fuels
examples:wood,coal,oil,natural gas,biomass
b.)geothermal energy
c.)nuclear fissions
d.)solar energy
e.)hydroelectric energy
examples:dams,waves,tides
f.)wind energy
Power in Action 2009 - Tractors and farm machines at work
what is work?
ans:
-is the application of a force over a distance
-is equal to the product of the force and the distance through which it
produces movement
ans:
-is the application of a force over a distance
-is equal to the product of the force and the distance through which it
produces movement
Miyerkules, Nobyembre 16, 2011
Simple Machines with Bill Nye
what is a simple machine?
answer:
a simple machine is a machine consisting of only one or two parts.
there are six types of a simple machine:
a.lever
b.inclined plane
c.wedge
d.screw
e.pulley
f.wheel and axle
some examples of lever are:
*pliers
*scissors
a.)a lever is a simple bar that can rotate about a point called FULCRUM
b.)an inclined plane is a simple machine that reduces the force needed to lift loads
*some example of an inclined plane is:
*a ramp
c.)a wedge is an inclined plane with either one or two sloping sides
*some examples of a wedge are:
*ax
*hatchets
d.)screw is an inclined plane wound around a cylinder
*some example of screw is:
*screw
e.)pulley is used to change direction of force
f.)wheel and axle increase the amount of force
*some example of wheel and axle is:
*doorknobs
answer:
a simple machine is a machine consisting of only one or two parts.
there are six types of a simple machine:
a.lever
b.inclined plane
c.wedge
d.screw
e.pulley
f.wheel and axle
some examples of lever are:
*pliers
*scissors
a.)a lever is a simple bar that can rotate about a point called FULCRUM
b.)an inclined plane is a simple machine that reduces the force needed to lift loads
*some example of an inclined plane is:
*a ramp
c.)a wedge is an inclined plane with either one or two sloping sides
*some examples of a wedge are:
*ax
*hatchets
d.)screw is an inclined plane wound around a cylinder
*some example of screw is:
*screw
e.)pulley is used to change direction of force
f.)wheel and axle increase the amount of force
*some example of wheel and axle is:
*doorknobs
Mag-subscribe sa:
Mga Post (Atom)