The echo (the sound reflection) and conditions necessary for hearing the echo
The echo The echo is a repetition of sound produced due to its reflection, It can be used to tell how far away an object is, how fast the object is moving, and even...
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What is melting point?, Life applications on melting process, Melting point vs Boiling points
Matter exists in three states which are solid, liquid, and gas, and the matter can change from one state to another by heating, The change of matter from the solid state to the liquid...
The function of the uterus in the female reproductive system
The uterus The uterus is a hollow pear-shaped organ and it has a muscular wall that can expand as the fetus grows during the pregnancy, the uterus is the largest and major organ of...
The movement of electrons around the nucleus and the energy levels
The movement of electrons The electrons are negatively (- ve) charged particles, They revolve around the nucleus with very high speed, The electron has a negligible mass relative to that of the proton or...