1. Ramps, Geotropism, and Turgor Pressure REVISITED!!

2. Geotropism Explores how gravity affects the growth of plants Remember the CORN Lab!!!!! What direction did the roots grow? ▫Downward What force caused the roots to grow that direction? ▫Gravity What direction did the stem grow? ▫Upward What force did the stem have to overcome? ▫Gravity

3. Germinating The process of the plant emerging from the seed.

4. Turgor Pressure (Potato Lab) The force that causes plants to stand upright. Water in the vacuole pushes the plant’s cell wall outward.

5. Turgor Pressure Happy Plants have high turgor pressure (lots of water) Low turgor pressure causes wilting(drooping)

6. Incline Plane (RAMPS) Watch video and fill out Reflection http://www.youtube.com/wat ch?v=M4xs104hCgYhttp://www.youtube.com/wat ch?v=M4xs104hCgY What’s the BIG IDEA!!! 1.The amount of Force is affected by the length of the ramp. ▫As the length increases, the amount of force needed decreases. 2.The amount of work is the same with or without a ramp.

7. Ramps and Triangle Angles 30◦ ramp angle 60◦ ramp angle 45◦ ramp angle