# Glencoe Science Level Blue

## Chapter 12: The Solar System

### Use Percentages

 1 The average density of Earth is 5.52 g/cm3. The average density of Mars is 71.4 percent of the average density of Earth. Calculate the average density of Mars. A) 5.2 g/cm3 B) 2.2 g/cm3 C) 3.9 g/cm3 D) 5.4 g/cm3 2 The average density of Earth is 5.52 g/cm3. The average density of Venus is 94.9 percent of the average density of Earth. Calculate the average density of Venus. A) 6.00 g/cm3 B) 5.4 g/cm3 C) 5.55 g/cm3 D) 5.2 g/cm3 3 The average density of Earth is 5.52 g/cm3. The average density of Mercury is 98.4 percent of the average density of Earth. Calculate the average density of Mercury. A) 5.43 g/cm3 B) 5.24 g/cm3 C) 3.94 g/cm3 D) 2.25 g/cm3 4 The average orbital speed of Earth is 30 km/s. The average orbital speed of Mars is 80 percent of the average orbital speed of Earth. Calculate the average orbital speed of Mars. A) 13 km/s B) 24 km/s C) 9.7 km/s D) 5.4 km/s 5 The average orbital speed of Earth is 30 km/s. The average orbital speed of Venus is 116.6 percent of the average orbital speed of Earth. Calculate the average orbital speed of Mars. A) 2.25 km/s B) 24 km/s C) 9.7 km/s D) 35 km/s 6 The average orbital speed of Earth is 30 km/s. The average orbital speed of Jupiter is 43.3 percent of the average orbital speed of Earth. Calculate the average orbital speed of Mars. A) 13 km/s B) 24 km/s C) 35 km/s D) 45 km/s 7 The average orbital speed of Earth is 30 km/s. The average orbital speed of Saturn is 32.3 percent of the average orbital speed of Earth. Calculate the average orbital speed of Mars. A) 12.2 km/s B) 9.7 km/s C) 18 km/s D) 24 km/s 8 The average orbital speed of Earth is 30 km/s. The average orbital speed of Neptune is 18 percent of the average orbital speed of Earth. Calculate the average orbital speed of Mars. A) 3.2 km/s B) 4.7 km/s C) 5.4 km/s D) 2.2 km/s 9 The average orbital speed of Earth is 30 km/s. The average orbital speed of Pluto is 15.6 percent of the average orbital speed of Earth. Calculate the average orbital speed of Mars. A) 4.7 km/s B) 5.4 km/s C) 9.7 km/s D) 13 km/s 10 The average orbital speed of Earth is 30 km/s. The average orbital speed of Uranus is 22.6 percent of the average orbital speed of Earth. Calculate the average orbital speed of Mars. A) 25 km/s B) p.7 km/s C) 11.5 km/s D) 6.8 km/s