IB物理一对一辅导：SL考试题和答案

　　物理是IB课程中比较有挑战的一个科目，想在考试中得到满意的分数，在考前就需要多练习真题。首先，练题可以让你熟悉题型和题目设置，让你熟悉考试的时间，进而帮你规划好正式考试时的答题时间安排。其次，所谓熟能生巧，练得多了，在做完后进行反思总结，你的能力自然也可以得到提升。本文主要分享IB物理SL的考试题和答案，需要的同学看过来!

　　一、考试构成

　　1.paper1

　　一卷主要考选择题，时间45分钟，分数30分，不能用计算器作答。

　　2.paper2

　　二卷可以用计算器，答题时间为75分钟，分数50分。

　　3.paper3

　　三卷也可以用计算器，一个小时的答题时间，分数35分。

　　二、考试内容

　　三张试卷的考试内容共涵盖了物理课程的大部分内容，一卷和其余两张试卷题型不太一样，因为有选择题。擅长哪张卷的考试内容，取决于你前期针对具体题型练习了多少真题。

　　三、IB物理考试题和答案

　　一卷：

　　eg.1.A cube has sides of length 10(±1)mm. What is the percentage uncertainty in the volume of the cube?

　　A. 1%

　　B. 3%

　　C. 10%

　　D. 30%

　　正确答案选D。

　　eg.2.In simple harmonic motion, the velocity leads the displacement by a phase angle p. What is the

　　value of o?

　　A.Zero

　　B/4

　　C.π/2

　　D.π

　　正确答案选C。

　　eg.3.Some of the properties that can be demonstrated using waves are

　　I. refraction

　　II. polarization

　　III. diffraction.

　　Which properties can be demonstrated using sound waves?

　　A. I and II only

　　B. I and III only

　　C. II only

　　D. ⅢI only

　　正确答案选B。

　　eg.4.A single, narrow slit is illuminated by a parallel beam of monochromatic light and the image is projected onto a screen. Which graph shows how the intensity I of the diffracted light varies horizontally across the screen?

　　正确答案选B。

　　二卷：

　　eg.1.In the drop tower shown, containers with experiments inside of them are fired upwards inside a vertical tower.

　　The container moves under the influence of gravity and eventually falls back to the bottom

　　of the tower. Most of the air is removed from the tower so that air resistance is negligible.

　　While in flight, the container and its contents are in free-fall.

　　(a)The container is fired vertically upwards with initial speed 48ms-'. Determine the time

　　that the container is in flight.

　　(b)At the end of the flight, the container of total mass 480kg falls into a tank of expanded

　　Styrofoam (polystyrene) spheres to slow it. The container stops after moving a distance

　　of 8.0m in the Styrofoam.Calculate the average force that acts on the container due to

　　the spheres.

　　(c)Outline why the experiments inside the container could be considered to I

　　be in“weightless”conditions.

　　正确答案：(a) t=9.8s;(b) F=6.9*10⁴N;(c) 这道题是让你概述为什么容器内的实验可被视为处于"无重量"状态。你可以这样表述：容器内的实验可以认为是失重的，因为反作用力是0，物体和容器将以相同的速度下落!

　　三卷：

　　eg.1.A student uses an electronic timer in an attempt to estimate the acceleration of free-fall g.

　　She measures the time t taken for a small metal ball to fall through a height h of 0.50m.

　　The percentage uncertainty in the measurement of time is 0.3 % and the percentage uncertainty

　　height is 0.6%.

　　(a) Using h=-gt’, calculate the expected percentage uncertainty in the value of g.

　　(b)State and explain how the student could obtain a more reliable value for g.

　　正确答案：(a) 1.2%;(b)这是让你说明并解释如何才能获得更可靠的g值。你可以这样表述：学生可以用一个更小的球来获得更可靠的g值，这样可以减少空气阻力。他们也可以使用更大的高度，更频繁地重复这一过程，以获得更可靠的结果。

　　以上是IB物理SL考试题和答案以及考试结构完整分享，对考试备考有疑问，欢迎同学们找考而思的专业老师辅导!