The different substances you use to move your raft
The independent variable in this question is the angle of light. It is the variable that is being changed or manipulated to observe its effect on the temperature of the surface.
Currents powered by wind are called wind-driven currents or wind-driven circulation. These currents are created by the friction between the wind and the surface of the water, causing the water to move in the direction of the wind.
The variable that does not affect friction is the surface area in contact. Friction is primarily influenced by the nature of the surfaces in contact, the applied force, and the roughness of the surfaces. The surface area does not have a direct effect on the frictional force generated between two surfaces.
Friction between the wheels and the surface it is moving on causes a balloon powered car to stop. As the wheels turn and the car moves, friction gradually slows down the car until it eventually comes to a stop.
Some independent variables for a balloon-powered car experiment could include the size of the balloon, the amount of air blown into the balloon, the weight of the car, and the surface the car is tested on. These variables can be changed or controlled by the experimenter to observe their effects on the car's performance.
That the surface tension of water varies with the water's temperature. In this case, temperature would be the independent variable and surface tension would be the independent variable.
The independent variable in this question is the angle of light. It is the variable that is being changed or manipulated to observe its effect on the temperature of the surface.
You can use any variable that you want.
James Irwin and David Scott drove the battery powered buggy in 1971 on the moon's cratered surface.
with mud and explosives
The independent variable of surface area typically refers to the factor that is manipulated or controlled in an experiment to observe its effect on a dependent variable. In experiments involving surface area, such as those studying reaction rates or heat transfer, the independent variable could be the size or shape of the material being tested. By varying the surface area, researchers can analyze how it influences outcomes like reaction speed or thermal conductivity.
Unnecessary
Water, because there is water covering over 2/3 of the planets surface
Currents powered by wind are called wind-driven currents or wind-driven circulation. These currents are created by the friction between the wind and the surface of the water, causing the water to move in the direction of the wind.
no, density currents flow slower than surface currents because surface currents are powered by the wind ;)
They were powered by diesel engines and batteries. The batteries were for underwater use and the diesels propelled the sub and charged the batteries while running on the surface.
Joanes de Fontana of Italy