Focus On Earth Science: California Grade 6

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1			If an S-wave has a velocity of 2.8 km/s in Earth’s core, what is the loss in velocity as the wave travels from the mantle to the core? Need a Hint?
			A)	0.7 km/s
			B)	4.5 km/s
			C)	1.2 km/s
			D)	0.2 km/s
2			If an S-wave has a velocity of 3.0 km/s in Earth’s crust, what is the gain in velocity as the wave travels from the crust to the mantle? Need a Hint?
			A)	1.0 km/s
			B)	0.5 km/s
			C)	1.5 km/s
			D)	2.0 km/s
3			What is the loss of speed as a P-wave travels at a velocity of 5.1 km/s through Earth’s crust through the mantle? Need a Hint?
			A)	2.0 km/s
			B)	3.0 km/s
			C)	3.1 km/s
			D)	2.9 km/s
4			If an S-wave has a velocity of 3.5 km/s in Earth’s crust, what is the gain in velocity as the wave travels from the crust to the mantle? Need a Hint?
			A)	0.5 km/s
			B)	1.0 km/s
			C)	1.0 km/s
			D)	1.5 km/s
5			If an S-wave has a velocity of 2.6 km/s in Earth’s core, what is the loss in velocity as the wave travels from the mantle to the core? Need a Hint?
			A)	1.9 km/s
			B)	7.1 km/s
			C)	2.0 km/s
			D)	1.5 km/s
6			What is the loss of speed as a P-wave travels at a velocity of 6.7 km/s through Earth’s crust through the mantle? Need a Hint?
			A)	1.0 km/s
			B)	1.3 km/s
			C)	2.0 km/s
			D)	2.3 km/s
7			If an S-wave has a velocity of 3.0 km/s in Earth’s core, what is the loss in velocity as the wave travels from the mantle to the core? Need a Hint?
			A)	0.5 km/s
			B)	2.0 km/s
			C)	1.0 km/s
			D)	1.5 km/s
8			If an S-wave has a velocity of 4.0 km/s in Earth’s crust, what is the gain in velocity as the wave travels from the crust to the mantle? Need a Hint?
			A)	2.0 km/s
			B)	1.0 km/s
			C)	1.5 km/s
			D)	0.5 km/s
9			What is the loss of speed as a P-wave travels at a velocity of 5.8 km/s through Earth’s crust through the mantle? Need a Hint?
			A)	1.2 km/s
			B)	2.2 km/s
			C)	1.0 km/s
			D)	0.8 km/s
10			If an S-wave has a velocity of 3.2 km/s in Earth’s crust, what is the gain in velocity as the wave travels from the crust to the mantle? Need a Hint?
			A)	1.3 km/s
			B)	1.0 km/s
			C)	1.5 km/s
			D)	0.8 km/s