Vocabulary consisting only from characters you are able to read
山
やま
mountain, pile, heap, climax, critical pointjlpt5, shizen
水力
すいりょく
hydraulic power, water powermix
入口
いりぐち
entrance, gate, approach, mouthjlpt5
上手く
うまく
(1)skilfully, skillfully, well, aptly, cleverly, (2)successfully, smoothly, (3)deliciously mix