Potential Energy
What is energy?
The ability to cause change.
Science Theory or Science Law?
This aspect of science explains how or why things happen in nature.
Science Theory!
Identify the Independent Variable: If fertilizer is applied to plants, then their height will change.
Fertilizer
Describe an energy transformation of a ball dropping and then bouncing once.
Potential transforms into kinetic which transforms back into potential and then kinetic again. The ball doesnt bounce as high as it was dropped because of thermal energy transferring to the surroundings.
Theory or Law?
This aspect of science describes what happens in nature.
Science Law
Identify the Dependent Variable: If fertilizer is applied to plants, then their height will change.
Potential energy depends on what two factors?
Position and Mass
What two factors affect the kinetic energy of an object?
which law states that energy cannot be created or destroyed, only transferred.
law of Conservation of Energy
What is a benefit of a science model?
Helps us observe things we can't see with our natural eyes.
Helps us make predictions.
Identify a conclusion of this experiment: One group of plants receive fertilizer each week, another group did not. Their height was measured every 3 days over the course of a month. At the end of the month, both groups of plants had similar heights. What would a conclusion of this experiment be?
The fertilizer did not affect the height of the plants.
Where does a pendulum have the most potential energy?
At the sides (top)
Kinetic energy decreases as Mass and _________ decrease.
What type of energy does kinetic energy turn into when the force of friction causes an object to stop moving?
Thermal Energy (Heat)
What is a limitation of the moon model Mr. Scitney has?
Doesn't show lunar cycles,
Doesn't show relative size,
Not made of same materials.
Identify a control group of this experiment: One group of plants receive fertilizer each week, another group did not. Their height was measured every 3 days over the course of a month. At the end of the month, both groups of plants had similar heights. What would the control group of this experiment be?
The potential energy decreases as an object falls.
Where does a pendulum in motion have the most kinetic energy?
At the bottom, or center point
Which statement is correct:
1. The ball's energy was destroyed every time it bounced.
2. We created energy when we raised the ball up.
3. The energy from the ball transferred to the air and floor.
3. The energy from the ball transferred to the air and floor.
What factors would be important to keep constant in an experiment involving testing fertilizer on plants?
Water
Soil
Sunlight
How many factors should a scientist change in a controlled experiment?