Unit 2 review: Electrostatics and Fields

Which statement best describes causation in scientific contexts?

• One event directly makes another occur

• Two events happen together repeatedly

• A coincidence that looks meaningful

• A pattern appears without explanation

Tags

NGSS.MS-LS2-4

NGSS.MS-PS1-2

Choose the best definition of correlation.

• A proven mechanism linking physical processes

• One variable produces change in another variable

• Random variation across unrelated measurements

• Two variables change together without proof of cause

Tags

NGSS.MS-PS3-1

Fill in the blank: A (a)   is a property of matter that causes particles to attract or repel each other, with positive (+) and negative (–) types.

Tags

NGSS.MS-PS2-3

Which scenario shows static electricity rather than an electric current?

• A generator rotates to light a bulb

• A battery powers a light continuously

• A balloon makes hair stand up after rubbing

• A wire warms as electrons flow through

Electrostatic force is best described as which type of interaction?

• Magnetic force only from moving charges

• Frictional force between neutral materials

• Non-contact push or pull caused by charges

• Contact force requiring direct touching surfaces

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which statement about electric fields is accurate?

• They only exist inside wires carrying current

• They are an invisible region around a charge

• They require touching to exert any force

• They appear only when objects are grounded

Tags

NGSS.MS-PS2-5

According to Coulomb's Law, how does the electrostatic force change when the distance between two charges is doubled, keeping charges constant?

• It halves in magnitude

• It stays the same at any distance

• It doubles in magnitude

• It becomes one quarter as large

Tags

NGSS.HS-PS2-4

Which pair correctly matches subatomic particles with their electrical charges?

• Proton negative, neutron positive

• Proton positive, neutron neutral

• Neutron negative, electron positive

• Proton positive, electron neutral

Select all statements that are true about opposite and like charges.

• Like charges repel each other

• Like charges attract each other

• Opposite charges repel each other

• Opposite charges attract each other

A thundercloud influences ground charges before lightning strikes. Which concept explains this effect at a distance?

• An electric field surrounding the cloud

• Induced magnetic domains

• Conduction through moist air

• Thermal convection from heated air

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5