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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
How does sunlight help plants grow?
Sunlight helps plants grow through the process of photosynthesis. the leaves on the plants absorbs the nutrients and turn them into energy.
Is a jellyfish a living thing?
Yes, it is a cnidarian, and is therefore an invertebrate animal. It just doesn't have the characteristics of a normal human like eyes and a nose.
YEAH!
Does light affect fish motions?
Yes, some fish prefer subdued lighting and some prefer brighter lighting. If a fish prefers subdued lighting and the lights are bright, the fish will do nothing but hide from the light and, if it cannot hide, the fish will begin to stress out and possibly act differently (more aggressive, etc).
Why do betta fish tend to react badly when they see their reflection?
i read that beta males are very territorial. it might just be that the fish is not self aware and believes he is seeing a male that is threatneing. so for him he's just trying to get the other fish scared or to prepare to fight even though there is no other fish.
What decomposers live in ponds?
Bacteria and fungi are the decomposers that you will find living in ponds. These organisms. These decomposers can be found living in the soil under the water and in mud surrounding the perimeter of the pond.
Are sandbar sharks related to grey nurse sharks?
Yes, the Sand Tiger Shark is also known as the Grey Nurse Shark (not to be mistaken for the Nurse Shark which is very different), as Grey Nurse Sharks have a wide global range they have been independently named in various countries and so have a number of names
How does a screw make life easier?
A screw converts rotational force into linear force, or vice versa. A screw jack, for example, converts the rotational force of a hand lever, or a motor, that rotates around a centre pivot point, into a linear force that extends or retracts a threaded rod. The rod can be used to lift a car, open a flap, or steer a wheel.
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Another example of a screw is the Archimedes Screw, in which a long screw propeller encased in a tube. The Archimedes Screw lifts, or pumps, a fluid, such as water, through the tube to a higher location.
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A carpenter's screw uses its threads to bind objects (often pieces of wood) together. As the carpenter turns the screw, it forces the threaded shaft to drive deeper into the wood until it becomes tightly affixed.
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These examples make life easier because, in the case of a jack, people are not strong enough to lift a car, but with the aid of a screw jack, a single person can crank the jack handle and thus lift the car (or part of the car) off the ground. An Archimedes Screw made life easier, as it was the first known example of a mechanical pump that lifted fluid from one level to a higher level. The carpenter's screw makes life easier because a screw will hold pieces of wood together stronger and more securely than a nail will, and unlike most nails, a screw can be easily reversed out of the wood.
It holds things together better than a nail.
Absolutely. In my much more silly days as a young adult, I had a small marijuana grow operation for my own consumption. I somehow got ahold of an ultraviolet bulb and plugged it up in the closet. I knew it wasn't healthy for people but I had no idea about plants, so I limited my exposure to it.
Within about a day of using the bulb, the pot plants were all dead or dying.
I went on to research why, and discovered that UV damages all living things.
How long does it take for American cheese to grow mold at room temp and dry?
American cheese does not melt at room temperature (unless your room is too hot for people.
How do you tell if a mushroom is poisonous?
You have to test its chemical composition. Simply looking at a mushroom, unless previously identified as poisonous or non-poisonous, cannot determine how it will affect you.
The independent variable: Soil
The dependant variable: Potato
Which bread molds the fastest bakery bread or store bought bread?
by letting air get to it
Also, it will grow if it is put in a dampish, wet, and place without a lot of light.
How does the percentage of cocoa in chocolate affect the rate at which it melts?
Yes, it does, indeed, the more cacao in the chocolate, the longer takes, execpt between 70% and 90% when 70% takes a bit more longer than 90%.
How long can you keep raw egg whites in the refrigerator?
It lasted 1 day for me. I am on Clomid so I'm not sure if that is normal or not. This was the first time I have been able to track ovulation and the first time I have ever noticed the Egg White discharge. Hope that helped! I actually ran a slight fever the day before. I have not been tracking my basal body temp but my cheeks were all pink and, though I didn't feel sick, my face was hot! i also crapped up a little that night. The next morning the egg white discharge was there and and night it was already gone. =) I'm new that this so this is the only 'normal' I know. I'm sure everyone can be different. -Summer
Does bread mold faster in damp or dry areas?
Wet will mold faster as the moisture accelerates the growth (especially in a dark environment)
How is a tea bag an example of selective permeability?
Only the water can enter into the bag and leave the bag, the tea leaves can not leave the bag.
Is there an experiment to inflate a balloon with a banana what supplies are needed?
A banana will slowly inflate a sealed balloon or plastic bag because it gives off gases (notably ethylene) as it ripens. However, if a banana is too ripe, it may oxidize and remove oxygen from the air.
Can colored water effect the color of a goldfish?
Well the chemicals in the coloring can hurt the goldfish so it is not safe to have food die in a goldfishes tank!:p Hope that helps!
Does lemon juice have a lighter juice than others in making invisible ink?
I believe so, because they are both acidic. If you are so curious, do an experiment!
When baking soda is added vinegar what are the bubbles that are formed made of?
We can see the bubbles in the test tube and effervesence can be seen. If you close the test tube with your thumb you can feel the pressure producing. for some burning gases you can check by intoducing the opening of test tube to flame.
