![]() How does cold storage affect the germination of seeds? Factors you can control include the type of seeds, the length of storage, the temperature of storage, and other variables, such as light and humidity.Is a seed affected by its size? Do seeds of different sizes have different germination rates or percentages? Does seed size affect the growth rate or final size of a plant?.You can look at the percentage of seeds that germinate or the rate at which seeds germinate. How do different factors affect seed germination? Factors that you could test include the intensity, duration, or type of light, the temperature, the amount of water, the presence/absence of certain chemicals, or the presence/absence of soil.What steps can you take to maximize crystal size? You can affect vibration, humidity, temperature, the rate of evaporation, purity of your growth medium, and time allowed for crystal growth. ![]() ![]() What effect do additives have on crystals? You could add food coloring, flavorings, or other "impurities.".Do all hairsprays hold equally well? Equally long? Does the type of hair affect the results?.Is laundry detergent as effective if you use less than the recommended amount? More?.How permanent are permanent markers? What solvents (e.g., water, alcohol, vinegar, detergent solution) will remove the ink? Do different brands/types of markers produce the same results?.Is the nutritional content of different brands of a vegetable (e.g., canned peas) the same?.Do all dishwashing detergents produce the same amount of bubbles? Clean the same number of dishes?.Do all brands of diapers absorb the same amount of liquid? Does it matter what the liquid is (water as opposed to juice or.Does the power of a microwave affect how well it makes popcorn?.Can you use a household water filter to remove flavor or color from liquids?.Does light affect the rate at which foods spoil?.Do the same types of mold grow on all types of bread?.If you shake up different kinds or brands of soft drinks (e.g., carbonated), will they all spew the same amount?.How do differences in surfaces affect the adhesion of tape?.How accurately do egg producers measure eggs?.Do different brands of popcorn leave different amounts of unpopped kernels?.How does the shape of an ice cube affect how quickly it melts?.Does magnetism affect the growth of plants?.Can a saturated solution of sodium chloride dissolve Epsom salts?.Does the presence of detergent in water affect plant growth?.Do white candles burn at a different rate from colored candles?.Can you make Jell-O using fresh pineapples instead of canned pineapples?.Are night insects attracted to lamps because of heat or light?.What plastic wrap best prevents oxidation?.What type of plastic wrap best prevents evaporation?.What ratio of vinegar to baking soda produces the best chemical volcano eruption?.Does catnip repel cockroaches better than DEET?.Will chilling an onion before cutting it keep you from crying?.What materials glow under black light? Can you use the UV light to find invisible, possibly smelly, stains in your carpet or elsewhere in your house?.What household waste materials might be used to filter water? Examples of materials you might try include banana peels and coffee grounds.Can you significantly affect your household water or electric bill (water or energy usage) by making a change in your or your family's behavior? For example, you might track changes you are making, such as taking shorter showers or turning off lights and record the utility usage.
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