Which of these best describes why copper is considered to be a more useful metal than gold? check all that apply. copper conducts electricity more readily than gold. copper reacts quickly with air and water to form a tarnish, and it corrodes more easily than gold. copper conducts heat very well; therefore, it is useful in cooking equipment. copper is more common on earth than gold. gold is much softer and easier to scratch, bend, or dent than copper.

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative