-
Highs and lows of sound (PDF/4.24MB)
-
From sound to melody (PDF/3.28MB)
-
Preventing noise (PDF/3.61MB)
-
How light travels through the air (PDF/4.71MB)
-
Regularity of light reflection (PDF/4.06MB)
-
Refraction of light (PDF/3.35MB)
-
Collecting light with a magnifying glass (PDF/3.11MB)
-
Properties of rainbow (PDF/5.24MB)
-
How leverage works (PDF/4.17MB)
-
Balance of leverage (PDF/2.66MB)
-
Use of slope (PDF/3.70MB)
-
Forces acting on surfaces (PDF/5.17MB)
-
Wind energy (PDF/3.86MB)
-
How a hand-cranked generator works and how to use it (PDF/2.53MB)
-
Electric currents and hear generation (PDF/3.49MB)
-
Change in potential energy (PDF/3.49MB)
-
Shape and weight of an object (PDF/3.70MB)
-
Shape and volume of an object (PDF/3.98MB)
-
Mass of a gas (PDF/2.56MB)
-
Expansion ad contraction of liquids (PDF/2.58MB)
-
Volume change of solids (PDF/3.90MB)
-
Expansion and contraction of metals (PDF/2.65MB)
-
Volume change of gases as a function of temperature (PDF/2.21MB)
-
Expansion and contraction of gases (PDF/3.96MB)
-
Heat transfer in water (PDF/3.44MB)
-
Heat transfer of water (PDF/3.12MB)
-
Evaporation of water (PDF/3.37MB)
-
Change of state of water (PDF/2.86MB)
-
Three stage changes of water (PDF/3.37MB)
-
About soil (PDF/3.86MB)
-
Permeability of soil (PDF/3.19MB)
-
The water holding capacity of soil (PDF/3.61MB)
-
Changes in the land due to the action of flowing water (PDF/12.9MB)
-
Formation of strata (PDF/6.53MB)
-
Changes in the earth (PDF/6.43MB)
-
Movement of the sun (PDF/4.14MB)
-
Changes in the shape of the moon and the position of the sun (PDF/3.98MB)
-
Absorption of solar heat (PDF/3.33MB)
-
Power of solar heat (PDF/5.10MB)
-
Atmospheric mechanism (wind) (PDF/5.30MB)
-
Atmospheric pressure (PDF/3.20MB)
-
Circulation of water in the atmosphere, and cloud formation (PDF/3.93MB)
-
Mechanism of warm and cold fronts (PDF/5.94MB)
-
Food mold (PDF/2.19MB)
-
Information from canned food labels (PDF/4.93MB)
-
Water filtration (PDF/4.65MB)
-
Methods of purification of water (decant) (PDF/4.95MB)
-
Methods of water purification (distillation) (PDF/4.40MB)
-
Effects of detergents (PDF/3.24MB)
-
Water pollution (PDF/2.79MB)
scroll