Font size
WorksheetsSCIENCE REVISION 28/JAN EC
Total questions: 20
Worksheet time: 5mins
1. Layer that absorb the ultraviolet rays coming from the sun is known as
Ozone
thermosphere.
1. Growing cover crops is a method of soil
erosion
conservation.
1. Process of preventing soil from getting eroded is known as
soil conservation
erosion.
Humus is present in layer of the _____soil
top
bottom
1. _____ is the softest mineral.
Copper
Talc
1. ____ is the metamorphosed form of granite.
Gneiss
Marble
1. _______ is the light rock formed by quick cooling of frothy lava.
Pumice
shell
1. A _____ is the simple machine which has two inclined planes.
wedge
screw
1. The fixed point or the support around which the rod moves is called
fulcrum
load.
1. Human arm is the _______class of the lever.
Third
First
1. (a) is the natural satellite of the earth.
The objects which revolve around the earth are known as (a)
1. When the water in the tide reaches its lowest level it is called (a) tide.
When the entire side of the moon illuminates, it is called (a)
1. When moon comes between sun and earth it is called (a) eclipse.
1. Quantity representing the amount of water vapour in the air is known as (a)
1. Aryabhatta was the first Indian satellite launched (a) .
1. (a) is the thinnest layer with very little air.
1. (a) gas is used to make colourful sign boards.
1. Naphthalene balls get converted to (a) directly.
