题干

实验探究题

①在探究“滑动摩檫力的大小与哪些因素有关”的实验中,小明的两次实验如图1甲、乙所示.

a、用弹簧测力计在水平方向向右____拉动物体.

b、如乙图所示,若拉动的木块上再放一个砝码,则发现弹簧测力计示数变大,说明在接触面积粗糙程度相同时,____滑动摩擦力越大.

②如图2是探究“动能大小与哪些因素有关”的实验装置.

a、运用____不同的两个小球,从高度相同的斜面上滑下,为的是让它们在达到水平面时____相同.

b、通过观察____可看出动能与质量的关系,上述过程中,除了转换法,还用了____方法.

③小明用调节好的天平测金属块的质量,天平平衡时,右盘中所加的砝码和游码位置如图3所示,则所测金属块的质量是____g.

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答案(点此获取答案解析)

匀速,压力越大,质量,速度,物体被撞击后向前滑行距离的远近,控制变量法的,76.4

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    Guided Walking Week April 2018

    Date: April 30th—May 7th 2018

    Location: Abdet, Costa Blanca

    A week of guided walking in the mountains around Abdet. Highlights include the climbing of Valencia's highest summit (Sierra de Aitana),traveling completely around the impressive Puig Campana, and several explorations in the Sierra de Aitana. Ancient trails lead through spectacular canyons (峡谷) to abandoned settlements situated high in the mountains. You will discover the snow trader routes which lead from the incredible snow holes high in the mountains down to the villages and towns on the coast. These years, golden eagles have made a return to this area, and you may also see other animals—wild goats, foxes, wild pigs and red squirrels.

    As part of the week you are invited to help clear some local walking paths. This involves clearing collapsed walls and rocks, cutting back fallen trees. This is of course optional and is just for half a day, and it's actually great fun!

Price: $499

Includes:

    Accommodation in the beautiful mountain village of Abdet

    All food—good home cooking

    Beer, wine, soft drinks Snacks and post walk treats

    Packed lunches & drinks (except café/bar visits)

    Expert guiding

    Photos/Videos of your days in the mountains

    Airport pick-up/return $25 each way (fly to Alicante)

    Single room supplement $75

    To book or get further information, please contact info@abdct.com.