Chemical testing of water

Why doesn't all of the energy from the sun that enters the atmosphere reach the earth? Science question for my hmwk!

From an origin you walk 3 meters east 7 meters west and then 6meters east. where are you now relative to the origin?

If the total number of earthquakes annually averages 14,500 approximately how many are magnitude 5 or higher? and show work.

A forest fire sends carbon monoxide and ash into the air. This is an example of the__1__ affecting the__2___. 1. A. Hydrosphere B Lithosphere C. Atmosphere 2 A Lithosphere B Atmosphere C Biosphere

How would you describe a fossil that was discovered in a rock at the base of a cliff to a fossil in a rock found at the top of a cliff?

During a summer with little rainfall, your house on a hill slope experiences an interval during which your well runs dry. You have to borrow water from your neighbor who lives downslope from you. Why does your neighbor have water when you don't?

If a force does not act parallel to the resulting displacement, what is the effect on the work done by the force?

A stick is a connection of two same - diameter metal rod 5 cm, and a length of both stick is 0,6m. The thermal conductivity of the first rod 92 cal / s. m.°C, and the second stick 50 cal / s. m.°C.

you can produce a sound by plucking a string or by blowing in a pipe. how are these two ways different?

There are four springs stretched by the same mass. Spring A: 25 cm Spring B: 10 cm Spring C: 100 cm Spring D: 1 cm Which spring is the strongest? A B C D