SCIENCE 5 PART 3

Which is the manifestation of moving charges?

• copper wire

• electricity or current

• source of electricity

• conductor

What do moving charges produce?

• insulator

• conductor

• magnetic field

• none of the above

The ____ made when the copper wire was wrapped around the nail strengthened the magnetic field formed

• spiral pattern

• the conductor

• none of the above

• electric field

Which type of weathering results to changes in the components of rocks and minerals?

• physical weathering

• mechanical weathering

• chemical weathering

• thermal weathering

Which of the following causes chemical weathering?

• acid rain

• animal movement

• abrasion

• plant movement

Which of the following can cause mechanical weathering

• rocks

• temperature

• carbonic acid

• sun

Which of the following is NOT an animal action that can induce weathering?

• ants making anthills

• movements of earthworms

• running tigers along rocks

• eagles flying in the sky

Rocks ____ when the temperature is low and they ____ when the temperature is high

• contract ; expand

• expand ; expand

• expand ; contract

• contract ; contract

What do you call the process in which soil or sediment is carried from one place to another?

• weathering

• soil erosion

• earthquake

• flood

Which of the following prevents soil erosion?

• flood

• planting trees

• wind

• mining