This simple machine can be described as a rigid bar that pivots about a fulcrum.
What is a lever?
100
This property of fluids (V) describes how "thick" or "thin" a fluid is.
What is viscosity?
100
This network carrying surface water is fresh water, is fed by smaller tributaries, and typically empties out into a lake or the ocean.
What is a river?
100
This branch of pure and applied science, which you can take as a separate course beginning in upper high school, involves living things.
What is biology?
200
This organelle is known as the cell's "powerhouse", breaking down sugars and providing energy to the cell.
What is the mitochondria?
200
This simple machine is the main one found in the blade of an axe.
What is a wedge?
200
We can calculate this property of a substance by dividing its mass by its volume.
What is density?
200
Along with ozone, this is a popular chemical used to disinfect water to kill bacteria and other harmful microorganisms.
What is chlorine?
200
In the background of the theme song of this popular educational TV show from the 1990s, a voice can be heard uttering, "Inertia is the property of matter."
What is Bill Nye the Science Guy?
300
This is the process whereby plants turn sunlight, along with carbon dioxide and water, into sugars and oxygen.
What is photosynthesis?
300
This class of lever finds the effort located in between the fulcrum and load, and commonly forms the basis of sports equipment (like hockey sticks or baseball bats), where the goal is to achieve speed and distance.
What is a third class lever?
300
It is the choppy airflow that causes people to feel queasy on an airplane ride.
What is turbulence?
300
This global warming phenomenon is named after a glass building used to provide light and heat to grow plants. It is responsible for climate change.
What is the Greenhouse Effect?
300
This planet is the closest to the sun in our solar system.
What is Mercury?
400
This organ system has the kidneys as its main organ, and allows the body to filter out toxins and release them from the body.
What is the excretory system?
400
The equation to calculate work done on an object involves multiplying these two things.
What are force and distance?
400
This branch of engineering makes use of compressed gas or pressurized air to provide fluid power to various systems, including air brakes.
What is pneumatics?
400
This toxic heavy metal, that poisoned the community of Minimata, Japan, in the 1950s, is in the news now for plaguing the Ontario First Nations community of Grassy Narrows.
What is mercury?
400
This is a table of the chemical elements arranged in order by atomic number so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.
What is the periodic table?
500
While cells are known as the "building blocks of life", this material is known as the "blueprint of life". It is shaped like a double helix, found inside the nucleus, and it allows important characteristics to replicate and be passed on to the next generation.
What is DNA?
500
It can be described as the study of people's efficiency in their working environment, and may involve, for example, designing a chair that is comfortable, good for your health, and user-friendly.
What is ergonomics?
500
This scientific principle describes the fact that the buoyant force on an object is equal to the weight of the fluid it displaces.
What is Archimedes' Principle?
500
This advanced form of water purification involves forcing water through a man-made semi-permeable membrane to trap and remove impurities.
What is reverse osmosis?
500
Canadian physicist, Arthur B. McDonald, won this $1 000 000 and gold medal prize in 2015, for his discovery of neutrino oscillations, which shows that neutrinos have mass.