chapter 8 study guide Flashcards
study guide questions (vocab in seperate deck) science test 9/7
what is the unit of measure for density?
grams per cubic centimeter (g/cm^3)
list some examples of plasma
lightning, stars, florescent bulbs
what does viscosity mean?
a fluid’s resistance to flow
what causes a change in state of matter?
when enough thermal energy is added to or removed from an object
identify one example of surface tension
when a sample of matter experiences a strong downward pull and stretches tight enough for a spider to walk on it (this is so stupid)
describe what happens in the solid state of matter by using an example
attractive forces between particles in a sample of matter are strong and pull the particles close together, keeping them in their positions
discuss the process of sublimination (???) and give one example
when thermal energy is added to a solid, it changes directly to a gas. one example of sublimination is dry ice
do particles move fastest at a high temperature or a low temperature?
high temperature
describe kinetic energy as a ball bounces
kinetic energy increases when a ball bounces up and decreases when the ball falls back to the ground
how is thermal energy calculated?
thermal energy is equal to the sum of all the potential and kinetic energy in an object
explain what happens when a cup of water is heated
adding thermal energy to a cup of water can cause the particles to move faster or get farther apart
explain why snow melts after a snow storm
the addition of thermal energy (basically snow cold sun hot sun bigger more power)
give one real-life example of condensation
during a hot shower, water vapor fogs up the cooler mirror as the vapor turns to water
give one real-life example of vaporization
a cook puts a pot of water on to boil eggs. a few minutes later, all the water is gone
snow forms in clouds because water vapor changes directly to ice. what is this process called?
deposition