What is the main difference between a series circuit and a parallel circuit?

• A series circuit has multiple paths while a parallel circuit has one path

• A parallel circuit uses more voltage than a series circuit

• A series circuit has one path while a parallel circuit has multiple paths

• Both circuits have the same number of paths for current

In a series connection of dry cells, how are the cells connected?

• All positive terminals are connected together

• Positive terminal connects to negative terminal of the next cell

• All negative terminals are connected together

• Cells are connected randomly

What is the total voltage when three 1.5V cells are connected in series?

• 1.5 volts

• 3.0 volts

• 4.5 volts

• 6.0 volts

What is an electromagnet?

• A permanent magnet made of iron

• A temporary magnet produced by electric current

• A natural magnet found in rocks

• A magnet that works without electricity

Which factor does NOT affect the strength of an electromagnet?

• Number of wire loops

• Amount of current supplied

• Color of the wire used

• Diameter of the core

What is mechanical weathering?

• Rocks changing their chemical composition

• Rocks dissolving in acid

• Rocks breaking without chemical changes

• Rocks melting due to heat

Which process occurs when water seeps into rock cracks and freezes?

• Chemical weathering

• Mechanical weathering

• Soil erosion

• Deposition

What are sediments?

• Large boulders only

• Smaller pieces of rocks formed by weathering

• Plant materials in soil

• Chemical compounds in water

What is deposition?

• The process of rocks expanding

• The breaking down of rocks

• The movement of soil by wind

• The settling of eroded materials in new locations

In a parallel circuit connection of cells, what is the total voltage?

• Equal to that of a single cell

• Double the voltage of one cell

• Triple the voltage of one cell

• Zero voltage