timmy has decided he wants to test which if music can really flowers grow. he decides to expose some roses to classic music 10 minutes every day. he will have another group of roses that will receive no music and a third group that will get music for 20 minutes per day. timmy makes sure to have the same types of plants in each group and to expose them to music at the same time during the day. he also makes sure that all plants get the same amount of water and sunlight each day. at the end of 2 weeks, timmy measures the height of all the plants to see if the music made a difference.

identify the independent variable, dependent variable and at least 2 control variables in this experiment

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano