Parts of a flower

Coefficient of frictioncoefficient of friction – force – motion – surfaces – friction

Is it true that 2N + 2N = 2N? - Sum of the magnitudes of two equal forcesresultant force – equal forces – force vectors – net force – physics

Steel ball raceKeywords (English): steel ball – free fall – gravity – time – motion

Keywords: Reproduction – Growth rate – Biomes – Life cycle

Male and female reproductive systemKeywords (English): reproductive system – male – female – fertility – reproduction

How can you identify a living creature through a diverse set of bones?bones – skeleton – organism identification – skull – limb bones – biological evidence – comparative anatomy – species recognition

Fat Digestion Investigationfat digestion – lipase – bile – emulsification – digestive system

Voltage, current, and resistance. voltage – electric current – resistance – electric circuit – Ohm’s law – potential difference

 Urinary systemKeywords (English): urinary system – kidneys – bladder – ureters – urine – blood filtration – excretion

Wavelength measurement wavelength – waves – frequency – vibration – wave speed – wave physics

Keywords: Electrical fuse – Safety – Circuit protection – Overcurrent – Melting

Keywords: Pepsin enzyme – Protein digestion – Stomach – Gastric juice – Digestive enzymes

Keywords: Colors – Temperature – Thermal radiation – Hot objects – Spectrum

Keywords: Capacitor – Charging – Voltage – Electrical energy – Electric circuit

Keywords: Acid strength – Strong acids – Weak acids – Ionization – pH

Keywords: Semi-permeable membrane – Diffusion – Osmosis – Molecules – Membrane transport

Keywords: Charges – Positive charge – Negative charge – Rubbing – Static electricity

Keywords: Solubility product – Sparingly soluble salts – Equilibrium – Solutions – Comparison

Keywords: Coulomb’s law – Electrostatic forces – Charges – Distance – Coulomb constant

Keywords: Millikan experiment – Oil drop – Electron charge – Electric field – Atomic physics

How raindrops are formedKeywords (English): rain formation – condensation – clouds – water cycle

Keywords: Equilibrium – Equal forces – Rest – Uniform motion

Keywords: Calories – Food – Energy – Combustion – Heat