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 3rd Preparatory   -  Second Term  - Science
The Vibrational Motion
The Vibrational Motion (2)
The Wave Motion
The Wave Motion (2)
The Wave Motion (3)
Sound Travel and Sound Production
How Does Sound Travel?
What is the Nature of a Sound Wave? Nature and Types of Sound Waves
What is the Nature of a Sound Wave? Nature and Types of Sound Waves (2)
Sound Reflection
Application on Sound Reflection
Noise Pollution
Noise Pollution (2)
The Role of Some Scientists in the Branch of Light
Nature of Light Waves
Light Reflection
Light Reflection on a Plane Mirror
Light Refraction
Light Refraction in a Triangular Prism
Mirrors
Concepts Related to the Spherical Mirrors
The Path of Some Incident Rays on a Spherical Mirror Surface and their Reflections
Learn step The Formatting of Images by Spherical Mirrors
The Formatting of Images by Spherical Mirrors (2)
Lenses
The Concepts Related to the Lenses
The Formation of Images by Lenses
The Formation of Images by Lenses (2)
Convex Lenses
The Path of Some Incident Rays on One of the Lense Faces and Their Emergence From It
Learn step Mixing Colours of Light
The Microscope
The Telescope
Parts of the Typical Flower
Types of Flowers
Pollen Grains
Sexual Reproduction in Flowering Plants
Formation of Fruits and Seeds
The Male Reproductive System, Reproductive Hormones and Puberty Features
The Male Reproductive System, Reproductive Hormones and Puberty Features (2)
The Female Reproductive System, Reproductive Hormones and Puberty Features
The Female Reproductive System, Reproductive Hormones and Puberty Features (2)
Venereal Health
Venereal Health (2)
Diseases Related to the Reproductive System B-Gonorrhea
Diseases Related to the Reproductive System A-Syphilis
Hereditary and the Transfer of Characteristics Through Generations (2)
Mendel's First Law
Mendel's First Law (2)
Mendel's Second Law
Inflammation of the Parotid Gland (Mumps or Parotitis)
Inflammation of the Parotid Gland (Mumps or Parotitis) (2)
Epidemic Liver Inflammation Hepatitis (A)
Serum Virus Hepatitis (B)
AIDS
AIDS (2)
Natural Immunity
Acquired Immunity
Acquired Immunity (2)
Antibiotics
Antibiotics (2)