Heat & Temperature
Why did some student's ice cream never turn solid?
1. They used a poor insulator causing too much heat transfer from their hands to the ice.
2. Not enough salt in the ice
3. Not enough shaking to allow heat transfer between the cream and the ice
4. They're bad at science experiments like Mr. Lam
List 3 abiotic factors a bear would have in Alberta
Sun, soil, water, air, snow, etc.
Define the radius and diameter
Radius - line from the edge of the circle to the middle
Diameter - line from the edge of the circle, crossing the middle to another edge of the circle
7 - (+ 11)
-4
13 + X = 56
X = 43
What is heat conduction, provide an example
The transfer of heat from a hotter object to a cooler object when they are in contact.
Cooking anything on a stove
What is a niche?
The role of an organism in its ecosystem, what it eats and what it does
What were 2 ways in class that were used to draw circles?
Compass and paperclip + string
-16 + (-14)
-30
X/3 = 21
/ means divide
63
What are the 3 types of fossil fuels and why do they harm the environment?
Oil, natural gas, and coal
Release greenhouse gases when burnt
Why are decomposers important to have in the food chain?
They help break down dead matter so it does not overflow and provides food for producers to keep the cycle going
A parallelogram has a base of 20 cm and a height of 2 cm, what is the area?
40 cm2
17 - ( - 28)
45
6X - 5 = 25
X = 5
Draw the particles of a gas vs liquid vs solid
Gas - fast moving and far apart
Liquid - In-between
Solid - Slower moving and very close
Define commensalism and give an example
A relationship where one organism benefits and the other is not harmed or benefits.
Examples will vary
A triangle has a height of 10 cm and base of 5 cm, what is the area?
25 cm2
-5 - ( -5)
0
X + 19 = -17
X = -36
What is the difference between active and passive solar heating?
Active - uses technology such as solar panels to harness the suns energy
Passive - Uses the suns energy without technology, is the design of the house such as windows and insulation
What is biomagnification?
When the concentration of a toxin increases as you move up the food chain
Draw a perpendicular bisector
A line that intersects another line forming 90 degrees and also cuts the other line in half
-19 + 3 + (-8)
-24
16 = 3X - 5
X = 7