- The objective of this lesson is to understand different types of energy and their characteristics.
- Kinetic energy is the energy of motion.
- Thermal energy is the total energy of the particles in a substance due to their movement.
- Thermal energy includes sensible heat and latent heat.
- Solid water (ice) is more structured, while liquid water is more fluid.
- Liquid water has more kinetic energy because its particles are moving more freely.
- Solid water has more potential energy because its molecules are held in a fixed structure.
- Liquid water has more thermal energy due to its increased movement and more energetic particles.
- Temperature measures the average kinetic energy of the particles in a substance.
- Thermal energy refers to the total energy in the substance, while temperature measures the average energy of its particles.
Can you please answer these questions with a very short and simple answer no longer than one sentence long.
What is the objective of this lesson?
What is kinetic energy?
What is thermal energy?
Which two types of energy does thermal energy include?
Compare solid and liquid water at 0 degrees Celsius.
Which has more kinetic energy? Why?
Which has more potential energy? Why?
Which has more thermal energy? Why?
What does temperature measure?
What is the difference between thermal energy and temperature?
11 answers
What is heat?
Big Idea- Heat always flows from __________ to ____________ temperatures.
Adding thermal energy to a substance can either increase the kinetic or potential energy of a substance.
- The three main states of matter are solid, liquid, and gas.
- Heat is the transfer of thermal energy between substances.
- Heat always flows from higher to lower temperatures.
- Adding thermal energy to a substance can either increase the kinetic or potential energy of that substance.
The food coloring spreads faster in warm water because the higher temperature increases the kinetic energy of the water molecules, causing them to move more rapidly and mix the color quickly.
Higher temperature = more kinetic energy = faster moving particles
If there has been an increase of potential energy in the molecules of a substance, what will be observed?
If there has been an increase of potential energy in the molecules of a substance, it will generally be observed as a change in state, such as melting or boiling, rather than a change in temperature.
What is potential energy?
- Kinetic energy is the energy of an object due to its motion.
- Potential energy is the stored energy of an object due to its position or configuration.
Label which image above has the most energy and least energy.
Why does the gas have much more potential energy than the solid?
When doing an experiment, how many variables should you change?
What is an independent variable?
What is a dependent variable?
In the experiment on page 3, the independent variable (variable that causes change) is the amount of ice. What is the dependent variable?
- Gas has the most energy, liquid has moderate energy, and solid has the least energy.
- The gas has much more potential energy than the solid because its particles are farther apart and can move freely, allowing for greater energy storage.
- In an experiment, you should change only one variable at a time.
- An independent variable is the factor that is changed or controlled in an experiment to test its effects.
- A dependent variable is the factor that is measured or observed in response to changes in the independent variable.
- In the experiment on page 3, the dependent variable is the temperature or state change of the ice.