Lightning is created when charges flow rapidly from

a. ground to cloud.

b. cloud to ground.

c. cloud to cloud.

d. all of these.'

What is the weight of 2.6 kg of yogurt

Danny lowers the sails on his boat. He paddles upstream at 19 km/hr. The current is still running downstream at 15 km/hr. What is the actual velocity of the boat? 34 km/hr, downstream 34 km/hr, upstream 4 km/hr, downstream 4 km/hr, upstream

The Coriolis effect is the result of which of these? A.) The rotation of Earth on its axis B.) The different air movements north and south of the equator C.) The friction that slows down winds near Earth's surface D.) Winds spinning off the equator

Another word for a joule per second is a (n)

As the clump of colored fluid at the bottom of the lava lamp rises to the top, which will increase?

Give one reason why the density of iron is higher than the density of oxygen

In which region of the periodic table do the elements NOT normally react chemically with other elements? A. metals B. metalloids C. nonmetals D. noble gases

A hot air ballon was a mass of 400 kilograms moves across the sky with 3200 joules of kinetic energy. the velocity of the balloon is

What Is a mineral made of oxidized hydrogen

If you were to go to space, and took your helmet of the suit off while your out side of the rocket, what would happen?