Biology
A person who studies biology is called this.
Biologist
Typically, in the northern hemisphere, summer lasts for this many months.
3
This element is number 1 on the periodic table of elements. You also couldn't have water without 2 of its atoms in every molecule.
Hydrogen
This continent, where you can find the Bosphorus River, Angkor Wat, and the Taj Mahal is the largest of Earth's 7 continents.
Asia
It is rumored that Sir Isaac Newton discovered this when an apple fell from a tree and hit him on the head.
Gravity
This smallest unit of matter usually has a nucleus at its center.
This is the sound caused by lightning.
Thunder
Sodium and Chloride mix in a 1:1 ratio to make NaCl, but you probably know it better by this name. Don't ask me about the chemical formula for pepper!
Salt
When crossing from Central America into South America, you'll have to do some from this country. You may even have to use a ferry to cross the canal that shares the same name.
Einstein proved that energy could be calculated by the formula E = mC2, where E represents energy, C represents the speed of light, and m represents this.
When breathing, we typically inhale oxygen and exhale this gas.
Carbon Dioxide (CO2)
Just like earthquakes, sudden changes in atmospheric pressure can cause these strong rushes of water. Australia, on average, receives 10-12 of them per year.
Tsunami (meteotsunami)
Organic chemistry is the study of compounds that make up living organisms. All organic compounds contain this element, C, for short.
Carbon
Juba is the capital city of this newest country in Africa that gained independence from Sudan in 2011.
South Sudan
No! Not the place you take your car, but this is the area of physics that is concerned with the movement of physical objects and the relationships among motion, matter and force.
Mechanics
This organ is the largest organ of the human body.
Skin
What we know as a hurricane here in the United States, and particularly over the Atlantic Ocean is often referred to by this other name when they land over the Pacific Ocean.
Typhoon
This metal (not the planet) is liquid at room temperature which made it popular for thermometers a long time ago. Just don't get any on you as it is extremely dangerous and even deadly if it gets inside of your body.
Mercury
This highest mountain in the U.S., formerly known as Mount McKinley, is in Alaska, and is more than 2000 feet higher than the next highest mountain, Mount Saint Elias.
Denali
I'm not trying to make you do anything you don't want to do, but according to physics, work is defined as this times distance.
Force
This process allows plants to use sunlight to make their own food from water and carbon dioxide.
Photosynthesis
When warm humid air mixes with cool dry air, the denser cool air is pushed over the warm air. When the warm air rises through the cold air, an updraft is formed, and when it touches the ground, this is the result.
Tornado
With a pH typically around 2.5, white distilled vinegar is this kind of compound, but don't worry...it's not the type that will eat your flesh away.
Acid
Count 'em up! The Americas (North/Central/South) have this many countries combined.
35
Fleming's Left Hand Rule shows what happens when an electric current enters this kind of field, although I don't think it's anything you can hang on your refrigerator.
Magnetic