1. TCAP Practice Energy
6th Grade Science

2. Which phrase best describes how the energy of a roller coaster car changes as it goes down a steep hill?
kinetic energy to potential energy
potential energy to thermal energy
potential energy to kinetic energy
mechanical energy to potential

3. Jack ate a peach. Which of the following best describes the energy transformation(s) that took place?
Photosynthesis transformed the sun’s energy into chemical energy, which transferred into Jack.
Chemical energy was transformed by chlorophyll into thermal energy to heat into Jack’s body.
The sun gave electrical energy that transformed into chemical energy in the peach.
The mechanical energy of the peach converted to chemical energy when Jack ate it.

4. The Universe is considered a closed system
The Universe is considered a closed system. For any number of energy transformations in this system, which of the following must be true?
energy is lost from the system as heat.
the total amount of energy in the system stays the same.
Thermal energy is added to the system.
The system’s kinetic energy equals its potential energy.

5. A hydroelectric power plant converts the energy from falling water into energy that is used by a light bulb. Which of the following shows the sequence in which energy and converted?
kinetic-mechanical-electrical-light
mechanical- electrical-light-kinetic
electrical-light-kinetic-mechanical
mechanical- light-electrical- kinetic

6. The energy obtained from a change in the arrangements of atoms in a substance is..
thermal energy
chemical energy
mechanical energy
gravitational potential energy

7. Which situation describes a conversion from kinetic energy to potential energy?
A storm develops, and it starts to rain and hail.
A duck east plants that are floating in water.
A rubber band is being wrapped around stalks of broccoli
A can rolls along a counter then falls to the floor.