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Week 2.4

QuestionAnswer
What is a conductor? an object that ALLOWS heat and electricity to pass through
Examples of conductors iron, steel, gold, aluminum, ALL METALS are conductors
What is an insulator? an object that STOPS heat and electricity from passing through
Examples of insulators styrofoam, wood, paper, cloth, rubber, plastic
mechanical energy is - energy from MOVEMENT
electrical energy - energy from moving electrons - anything that plugs in or uses batteries
thermal energy - heat energy
thermal energy examples - steam iron, oven, stove, fire, heater
light energy examples - headlights, fire, light bulbs, stars, fireflies
reflection is - the BOUNCING of light when it hits a smooth, shiny surface
refraction is - the BENDING of light when it travels through a new medium like glass or water
objects that reflect - mirror, smooth metals, tinted glass, dark TV screen
objects that refract - water, lenses, prisms, microscope, telescope, magnifying glass, hand lens
How does light travel? in straight lines, even after being reflected or refracted
Which property of light causes objects to appear larger or smaller? refraction
renewable resource - a natural resource that can be replaced in a human lifetime (100 years or less)
non-renewable resource - a natural resource that takes millions of years to form or replace
what property of light causes object to appear broken or larger in water? refraction
soluble means - CAN dissolve in water
insoluble means - CANNOT dissolve in water
less dense means - will float in water
more dense means - will sink in water
rapid changes to Earth's surface - volcanic eruption, earthquake, flood, wildfire, hurricane
slow changes to Earth's surface - weathering, erosion, deposition
Organisms COMPETE when - there is not enough of something they NEED
Which planet is closest to the sun? Mercury
Which planet is 4th from the sun? Mars
Which planet is 7th from the sun? Uranus
Deltas are formed by - water (river) deposition
Sand dunes are formed by - wind erosion & deposition
Valleys are formed by - glacier (ice) erosion
Canyons are formed by - water (river) erosion
metals that are magnetic - Steel, iron, nickel, cobalt SINC
metals that are NOT magnetic - aluminum, copper, gold, silver
relative density is - whether an object will sink or float in water
surface of the sun is made of - burning gases
parts of the water cycle - water evaporates, clouds form, rain falls as precipitation
why is water considered a renewable resource? it is renewed through the water cycle
Created by: nowlinclass
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