Grade 7 | Unit 5 | Lesson 3: Changing Elevation | Practice Problems

What is the final elevation if a bird starts at 20 m and changes 16 m?

• 36 m

• 4 m

• -11 m

• 2 m

• -20 m

What is the final elevation if a butterfly starts at 20 m and changes -16 m?

• 36 m

• 4 m

• -11 m

• 2 m

• -20 m

What is the final elevation if a diver starts at 5 m and changes -16 m?

• 36 m

• 4 m

• -11 m

• 2 m

• -20 m

What is the final elevation if a whale starts at -9 m and changes 11 m?

• 36 m

• 4 m

• -11 m

• 2 m

• -20 m

What is the final elevation if a fish starts at -9 m and changes -11 m?

• 36 m

• 4 m

• -11 m

• 2 m

• -20 m

• Neon: 0

• Oxide: -2

• Copper: +2

• Tin: 0

Element	Charge from electrons	Charge from protons	Overall charge
Carbon	-6	+6	0
Neon	-10	+10
Oxide	-10	+8
Copper	-27	+29
Tin	-50	+50

• 43.6

• -4.8

• -93.4

• 51

• 43.6

• -4.8

• -93.4

• 51

• 43.6

• -4.8

• -93.4

• 51