Science
Write the
following content in the science notebook and submit the same on 9/2/2016.
Learn the underlined words for a dictation on 10/2/2016.
Simple machines
|
Definition
|
Function
|
Examples
|
Lever
|
A
stiff bar that rest on a support is called fulcrum
|
To
lift and move load
|
Nutcracker,
seesaw, opener, elbow
|
Pulley
|
It
is wheel with a rope around it
|
It
helps to move things up, down or across easily
|
Curtain
rod, crane, fishing net
|
Screw
|
An
inclined plane that winds around itself
|
Helps
to connect two objects together
|
Screw,
bolt, drill, jar-lid
|
Inclined plane
|
An
inclined plane is a flat surface that is higher on one end
|
To
move things easily up and down
|
Slide,
stairs, ramp, escalator
|
Wheel and axle
|
Wheel
helps people get around faster. Axles help the wheel to turn.
|
To
move loads
|
Car,
wagon, bike, pencil sharpener
|
It
is used to push two objects apart.
|
To
cut, pull or make the objects apart
|
Knife,
axe, nail, front of boat, scissor
|
Hindi
Revise page 83 of Unit -13 for a review on Wednesday,
10/02/16.
