Charges & Forces
Two objects with the same charge experience this.
What is repulsion?
A positively charged subatomic particle.
What is a proton?
True/False: Static electricity requires friction.
What is false?
A molecule with partial positive and partial negative ends.
What is a polar molecule?
A surface with high albedo mostly does this to sunlight.
What is reflect it?
Opposite charges experience this interaction.
What is attraction?
The center of the atom that contains protons and neutrons.
What is the nucleus?
A temporary shifting of electrons in a neutral object caused by a nearby charged object.
What is polarization?
Why are electrons attracted to protons?
What is opposite charges attract?
Black surfaces heat faster because they have high ________.
What is absorption?
Electrostatic force increases when this distance change happens.
What is distance decreases?
Why are atoms electrically neutral?
What is equal numbers of protons and electrons?
Lightning forms when a cloud develops strong ______ between charge regions.
What is charge separation?
How does salt dissolve in water?
What is water’s polarity separates Na⁺ and Cl⁻ ions?
The percent of sunlight a surface reflects.
What is albedo?
Name one way to increase the force of attraction between two charged spheres.
What is increase the charge or decrease the distance?
Describe the structure of an atom.
What is a nucleus surrounded by an electron cloud?
Lightning occurs in dry warm air or wet warm air?
What is wet warm air?
Name a material where electrons do NOT move freely.
What is an insulator?
Name a material where electrons move freely.
What is a conductor?
The force that attracts opposite charges and repels like charges.
What is electrostatic force?
What was missing from J.J. Thomson’s model?
What is the nucleus with protons and neutrons?
Explain what really causes lightning.
What is negative charge at the cloud base is attracted to positive charge on the ground, creating a discharge?
What term describes the shifting of charges in molecules like water?
What is polarity?
Explain the relationship between CO₂ and sea level rises.
What is CO₂ warms the Earth, melts ice, and raises sea levels?