(I know this is late so hopefully other people find it helpful)
<u>Answer</u>: Solid Cu
Since this is a <u>voltaic cell</u>:
<u>Copper</u> is the cathode, therefore having a positive charge.
<u>Zinc</u> is the anode, therefore having a negative charge.
(Also, I took the exam and it's correct; good luck everyone!)
The two types of energy changes that occur are heat and light changes.
Answer: The faster stuff or an object moves, the more energy it has. ... Energy can be transformed from one way to another. Kinetic energy can be told apart from the various forms of potential energy. A demonstration is: toaster transforms electrical energy into thermal energy.
Explanation: An energy transformation is the change of energy from way to another. Energy transformations occur everywhere every second. There are many different forms of energy such as electrical, thermal, nuclear, mechanical, and chemical. Because the law of conservation of energy states that energy is always conserved in the world and simply changes from one form to another, many energy transformations are taking place all the time
Two factors determine whether a substance is a solid, a liquid, or
a gas:
<span>
1) The kinetic energies of the particles (atoms, molecules, or ions) that
make up a substance. Kinetic energy tends to keep the particles moving
apart.<span>
'
2) The attractive inter molecular forces between particles that tend to draw
the particles together.</span></span>
<span />
Answer : option B) Gravity acting on the edges of plates and friction between the plate and the asthenosphere.
Explanation : The gravitational force acting on the edges of the tectonic plates raise a friction between the plate and the asthenosphere, which results into the motion of the tectonic plates.
Usually, the tectonic plates are found to move because of the intense heat produced from the Earth's core which causes the molten rock in the mantle layer to move and make a motion. It moves in a pattern which is called as convection cell that forms when the warm material rises, and cools, later eventually sink down producing the motion in the tectonic plates.
