Energy Cocepts
Energy that an object has because of its motion is called?
Kinetic Energy
Heat flows naturally from higher to lower what?
Temperature
Name one way heat can move from one object to another.
Conduction, Convection, or Radiation.
Melting ice makes sea levels go up or down?
Up
How many significant figures are in 0.00456?
3
Energy cannot be created or destroyed; this principle is called?
Conservation Of Energy.
What instrument measures temperature changes?
Thermometer
Warm water rises and cool water sinks in a pot. This is called?
Convection.
Dark surfaces absorb more or less sunlight than light surfaces?
More
In multiplication or division, how do you determine the number of significant figures in the answer?
It has the same number as the measurement with the fewest significant figures
Name an example of energy stored in chemical bonds.
Chemical Energy
why metal feels colder than wood at the same temperature.
Metal conducts heat away from your hand faster than wood does.
Heat moves through empty space by what process?
Radiation.
Melting ice reduces reflectivity and causes more warming. What is this called?
Positive Feedback.
Round 12.345 to 3 significant figures.
12.3
When a moving object stops, its kinetic energy often changes into what?
Thermal energy
If you double the mass of water, how much energy is needed to heat it?
Twice as much energy.
Metal feels colder than wood at same temperature because it conducts heat faster. True or false?
True
How can a berm slow glacier melt?
Blocks warm water, reduces heat flow to ice.
When adding 2.45 + 0.032, how many decimal places should the answer have?
Two decimal places(2.48)
Energy is the ability to do this.
work
Temperature stays the same during this change of solid to liquid.
Melting
How does insulation slow energy transfer?
Reduces Conduction, Convection, or Radiation.
If a glacier melts faster than snow can accumulate, what long-term effect does this have on sea level and ocean circulation?
Sea level rises, and changes in freshwater input can disrupt ocean currents and affect global climate patterns
A student measures 0.007560 m and 12.3 m, then multiplies them. How many significant figures should the answer have?
3