SAT2物理考试内容与考点介绍
Math and physics go hand in hand, right? You might be surprised, then, to learn that you aren’t allowed to use a calculator on SAT II Physics. The math required of you never goes beyond simple arithmetic and manipulation of equations. You have, on average, 48 seconds to answer each question, and the people at ETS realize that isn’t enough time to delve into problems involving simultaneous equations or complex trigonometry. They’re more interested in testing your grasp of the basic concepts of physics. If you’ve grasped these concepts, your weakness in math isn’t going to hurt you.
ETS breaks down the concepts you need to know for the test into six categories:
Topic Mechanics
Electricity and Magnetism Waves
Heat, Kinetic Theory, and Thermodynamics Modern Physics Miscellaneous
Percentage of the Test 34–38% 22–26% 15–19% 8–12% 8–12% 2–4%
While these categories are helpful, they are also very broad. You may be a whiz with waves but a loser with lenses,and want to know how much of the waves portion of the test will bedevoted to optics. To help you out, we’ve broken the test down evenfurther so that you’ll know exactly where to expect to feel thesqueeze. (These figures are only approximations, and may vary from testto test.)
Topic Mechanics Vectors Kinematics Dynamics
Work, Energy, and Power Special Problems in Mechanics Linear Momentum Rotational Motion
Circular Motion and Gravitation
% of the Test 34–38% 2% 6% 10% 6% 5% 2% 1% 4%
Number of Questions 25–29 1–2 4–5 7–8 4–5 3–4 1–2 0–1 2–4
Thermal Physics Heat and Temperature
Kinetic Theory and Ideal Gas Laws Laws of Thermodynamics Heat Engines
Electricity & Magnetism Electric Fields, Forces, Potential Magnetic Fields and Forces Electromagnetic Induction Circuits and Circuit Elements Waves Waves Optics Modern Physics Special Relativity Atomic Models Quantum Physics Nuclear Physics Miscellaneous Graph Analysis Equation Manipulation Significant Digits and Lab Skills
8–12% 4% 2–3% 1% 2–3% 22–26% 10% 6% 1% 6% 15–19% 10% 7% 8–12% 1–2% 3% 2% 3% 2–4% 1–2% 0.5–1% 0.5–1%
6–10 2–4 1–2 0–2 1–2 16–20 7–8 4–5 1 4–5 11–15 7–8 5–6 6–9 1–2 2–3 1–2 2–3 1–3 0–2 0–1 0–1
The chapters of this book are organizedaccording to these categories. If a physics topic is not in this book,you don't need to know it. Here's some other helpful information:
You need to know: the formulas expressing physical relationships (such as F = ma), how to manipulate equations, how to read a graph
You don't need to know: trig identities, calculus, three-dimensional vectors and graphs, physical constants (such as G = 6.67
10–11 N·m2 ? kg2)
SAT物理练习题1
SAT物理练习题一 SAT Physics Practice Test One
Question 1:
An object of mass m moving with a velocity v collides with another object of mass 2m. The two objects stick together and they collide with a third object of mass 3m. After the second collision the three objects move together at the same speed. What is the velocity of the three objects after the second collision? v/12 v/6 v/3 v/2 v
Question 2:
An electric motor accelerates its rotation with a constant angular acceleration of 2 rad/s2 until it reaches a frequency of f = 10/? Hz. If the motor starts from rest, how long does it take to reach frequency f? 6s 10s ?s 12s 15s
Question 3:
Two satellites orbit the earth at radii r1 and r1. What is the ratio of the velocities of the two satellites?
SAT2物理(考试介绍及模拟题)
