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Science Questions

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Total questions: 54271

How do electromagnets work?
Popularity: 308

What is the difference in weight between a gallon of water and a gallon of gasoline?
Popularity: 268

Why is the sky blue?
Popularity: 228

What makes stain removers work?
Popularity: 220

What effect does music have on heartrate?
Popularity: 217

What is the difference between a test tube baby and cloning?
Popularity: 217

What safety rules should be followed in a science laboratory?
Popularity: 212

Why does bottled water have an expiration date?
Popularity: 206

Why are the rear tires of a tractor bigger than the front tires?
Popularity: 199

What would happen if there was no electricity?
Popularity: 193

What is the best microscope to buy for home or personal use?
Popularity: 193

Do the sun's tanning rays penetrate water and to what degree?
Popularity: 190

What causes the popping or tinkling sounds you hear as hot metal pipes cool off and contract?
Popularity: 189

What keeps airplanes up?
Popularity: 182

What is the first and last step in the scientific method?
Popularity: 179

How is a wooden ship inside a glass bottle made?
Popularity: 178

How many gallons are in a cubic gallon?
Popularity: 176

Which two mountain ranges are responsible for taking most of the moisture along the west coast of the US?
Popularity: 176

Are there any ways to pass through a laser sensor undetected?
Popularity: 175

If you buy a microscope for the home what level of detail would one be able to see?
Popularity: 175

How does Nikola Tesla's anti-gravity machine work?
Popularity: 171

What are the uses of roselite?
Popularity: 164

What are clouds made of?
Popularity: 158

Where can you get a diagram for a metric stick?
Popularity: 155

If you fly in a plane from New York to India is the distance flown less than flying from India to New York based on the rotation of the earth?
Popularity: 153

Who is the greatest scientist in the world?
Popularity: 145

Why are the oceans salty?
Popularity: 144

What is the average teenage IQ?
Popularity: 143

How can you make your own car wax polish?
Popularity: 143

What are test tube babies?
Popularity: 139

What is total charge?
Popularity: 137

What experiments did Gregor Mendel conduct and what did he find out?
Popularity: 136

How do you create a carbon atom cycle story?
Popularity: 136

If lightning hits a body of water will there be a splash?
Popularity: 135

Is test tube cloning accepted by our society?
Popularity: 135

What is the family background of Gregor Mendel?
Popularity: 131

How many pounds does one gallon of water weigh?
Popularity: 130

How do you get rid of all bubbles in clean water?
Popularity: 129

Can you see static electricity?
Popularity: 127

Why does the Watershed need to be enforced?
Popularity: 127

If one gallon of water weights 8.34 lbs would adding a 2 lb fish to the water change the weight of the water?
Popularity: 125

What are the general principles of agroforestry?
Popularity: 125

How does light travel through a camera?
Popularity: 125

How do different types of music such as heavy metal rap or country affect a person's behavior?
Popularity: 124

Why will a string vest with a shirt over it keep you as warm as a jumper?
Popularity: 124

What is the effect of sodium hydroxide on the action of pepsinogen?
Popularity: 121

Where do they make fuel cells?
Popularity: 121

How much does a gallon of ice weigh?
Popularity: 120

What are 'primary' inequalities?
Popularity: 118

Why do men have nipples?
Popularity: 116

How can you tell if a young heifer is pregnant?
Popularity: 116

How could you calculate the evaporation rate in a farm based on the humidity and temperature?
Popularity: 115

What is the mathmatical formula for calculating volume?
Popularity: 114

Why is skin designated an organ?
Popularity: 114

What is the shortest muscle in the human body?
Popularity: 113

What is a gene?
Popularity: 112

How come when you stand on your head it starts to throb but when you stand on your feet they don't?
Popularity: 112

Why do objects appear the color they are?
Popularity: 112

Are fuel cells dangerous to make or dipose of?
Popularity: 111

What is the scientific attitude and what attitudes and characteristics define a good scientist?
Popularity: 108

Why do cows face the same direction?
Popularity: 107

What are advantages and disadvantages of static electricity?
Popularity: 104

Are cosmic strings subatomic particles or the remnants from the big bang?
Popularity: 102

What is the connection between organisms in a stream and the dissolved oxygen level?
Popularity: 97

Can one twin absorb the other?
Popularity: 94

How many gallons in a barrel of oil?
Popularity: 90

Why do stains stain?
Popularity: 88

Why do veins become more prominent as one ages?
Popularity: 85

Where can you find nitric acid?
Popularity: 82

What is measured in hoppersfeet?
Popularity: 78




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