Important Equations Involving Percents
These equations are important for SAT and ACT math. – Percent change: (new-old)/old * 100 – Percent error: (experimental-theoretical)/theoretical *. 100
Summer Prep
Physics for ACT Science
Total mechanical energy = kinetic energy + potential energy Mechanical energy is the sum of kinetic and potential energy in an object that is used to do work. It’s the energy in an object due to its motion or position. KE = 0.5mv^2 PE (energy stored in an object) = mass*g*height [g = acceleration due[…]
Chemistry and Physics on ACT Science
Molar mass is measured in grams per mole. You may need to calculate molar mass of a compound. This info is found in the periodic table. Example: NaCl has a molar mass of 58.35 (22.9+35.45) Na:22.9 Cl:35.45
Know Your Physics + Chemistry for ACT Science!
– Density = mass/volume – Increasing pressure always raises density. Increasing temperature usually lowers density. When water freezes, it is less dense than liquid water. – Force of a spring = kx k is a constant and x is the amount of stretch or compression. – PE(spring) = 0.5kx^2 – Fahrenheit and Celsius F =[…]
Important Mathematical Equations for ACT Science
– D=RT distance = rate * time – Position is in meters – Velocity is change in position, in meters per second – Acceleration is change in velocity, in meters per seconds^2 – Relative probability: P(X|Y) = P(X and Y) / P(Y) = probability of X given Y
Practice Studying Biology for Standardized Tests
Did you know that the ACT has a science section that tests your ability to interpret scientific data and make observations about the natural world? Photosynthesis: – Light + water + carbon dioxide –> oxygen and glucose – Occurs in chloroplasts – green pigment is called chlorophyll (only in plants!) – Uses solar energy and[…]
Know Your Biology Before the ACT!
Cellular Respiration: – Occurs in mitochondria – Plants and animals – Converts chemical energy (glucose) to ATP – Solar energy –> photosynthesis—chemical energy –> cellular respiration—ATP – Cell membrane – used for active and passive transport
Biology Info for ACT Science
It is important to know basic biology, chemistry, and physics for the ACT Science section! – Facilitated diffusion = molecules go from an area of higher concentration to lower concentration with the help of a carrier molecule – across a selectively permeable membrane – can be with larger molecules – Ribosomes = protein builders of[…]
Advanced Definitions for ACT Biology
Monocot = flowering plant whose seeds have one embryonic leaf (cotyledon) Dicot = plant with seed with two embryonic leaves (cotyledons)
Scientific Terms to Know for Standardized Tests
– Peduncle: the stalk of a flower – Receptacle: the part of a flower stalk where the parts of the flower are attached – Sepal: the outer parts of the flower (often green and leaf-like) that enclose a developing bud – Stamen: the pollen producing part of a flower, usually with a slender filament supporting[…]