Level 6: Forest Lane
Section A
Exhibit: Map of the Great Lakes
Topic: Water Systems
A1. Lake Superior has the coldest water. It is the deepest of the Great Lakes and has the largest surface area, which means it has a significantly larger volume of water than the other Great Lakes. It also extends farthest north.
Level 6: Cohon Family Nature Escape
Section B
Exhibit: Watershed Management
Topic: Water Systems
B1. One sign of watershed management is the large grate, which catches springtime water run-off and prevents flooding of the Science Centre. Students may also identify pebbles or mulch as pervious (permeable) materials that absorb stormwater run-off.
B2. The Science Centre is located in the valley of the Don River.
B3. The source of the river system is the Oak Ridges Moraine.
B4. The grade was installed to catch and remove springtime run-off and heavy rainfall from the Science Centre to prevent flooding. The positive impact of the grate is that it prevents the Science Centre from flooding; however, there is a negative impact on the urban forest, because this draining prevents water from reaching the plants.
Level 6: Science Arcade
Section C
Exhibit: Giant Lever
Topic: Systems in Action
C1. Answers will vary.
C2. Answers will vary.
C3. The total amount of work is the same in both scenarios. When the student creates a heavier load, the force increases. However, the displacement decreases when the lever lowers.
C4. The student would need to stand farther from the fulcrum to lift the lever. This would allow them to use less force to lift the load.
Section D
Exhibit: Fulcrum and Leverage
Topic: Systems in Action
D1. Weight C takes the most force to lift.
D2. Weight A takes the least force to lift.
D3. Lever A will move the student’s hand the farthest.
D4. Lever C will move the weight the farthest.
D5. Answers will vary. Applications could include lifting any type of heavy object.
Level 6: The AstraZeneca Human Edge
Section E
Exhibit: Living Liquid
Topic: Cells
E1. Red blood cells make up >40% of your blood. White blood cells make up ≤1%.
E2. A cell’s nucleus takes up a lot of space. Maturing red blood cells lose their nucleus to make as much room as possible for hemoglobin, which transports oxygen.
Section F
Exhibit: Have a Heart
Topic: Cells
F1. The athlete’s heart is larger and beats fewer times per minute.
F2. Regular endurance exercise increases the size of the heart. A larger heart can pump blood more efficiently, because more blood is pumped with each beat. This results in fewer beats per minute.
Section G
Exhibit: Immunity Mirror
Topic: Human Health and Body Systems
G1. Answers will vary. Students may mention the following points from the exhibit:
- Dendritic cells gather up pieces of the virus and transport the viral fragments via the lymphatic system.
- Inside the lymph nodes, dendritic cells show your killer T cells the virus fragments so they’ll know which infected cells to target.
- Killer T cells identify and destroy the infected cells.
- Plasma cells produce virus-fighting proteins called antibodies.
G2. When the virus you have been vaccinated against enters your airway, your antibodies and immune memory cells respond quickly to block it before it can damage your cells.
Level 6: Weston Family Innovation Centre
Section H
Exhibit: Warka Tower
Topic: Water Systems
H1. Answers will vary, but may include the following information from the exhibit:
- The main purpose of the Warka tower is to provide a clean supply of water in areas where clean water is scarce or difficult to access.
- The tower passively collects water from rain, fog and dew. There are no moving parts or electricity required for it to work.
- The top of the tower is open to collect the falling rainwater.
- The frame of the tower is surrounded by a mesh fog net. Water droplets from the fog collide with the mesh, stick to it and run down into the water tank.
- At night, when the temperature drops, the tower cools down. There is a collector inside the tower that fills the tank with dew that has condensed.
- The tower structure uses natural materials that are lightweight, strong and locally sourced.
H2. The starting scene is daytime at 25 ℃ and 30% humidity.
First button: Day turns to night, the temperature drops to 12 ℃ and the humidity increases to 70%. Small water drops are collected from the stone bottom of the tower.
Second button: The temperature drops to 20 ℃ and the humidity is 85%. The area is covered in fog, and water droplets are visible on the tower mesh.
Third button: The temperature drops to 14 ℃ and the humidity is 93%. Clouds cover the sky, and it starts to rain. Rain water is collected in the tower.
