Four examples of Natural Phenomena
flash floods闪电水灾, human growth人类成长, rainbows彩虹, volcanic eruptions火山爆发, occurrence of day and night白天和夜晚的发生, thunder lightning闪电
..................has made our life more comfortable and solve various problems.
Innovation of technology科技的创新
.............is used to measure the current that flows through an electric circuit.
Ammeter电流表
Converting unit of base quantity 170mm = 0.017m (True or False)
False
Temperature > degree Celsius > °C (True or False)
False
Study of living things is the field of study for.............
biology 生物学
All living things are made up of............
cells
Cells contract and relax to move the body. What type is the cells?
muscle cells 肌肉细胞
Living things grow due to the process of..................
cell division
Name FOUR parts of Animal Cell.
Cell membrane（外层膜）, Mitochondria（线粒体）, Nucleus（中心核）, Cytoplasm （内膜）
Homeostasis controls (blood pressure, water regulation, height, body temperature).
blood pressure, water regulation, body temperature
The homeostasis control center is located in.............
brain 头脑
Why does hairs lie flat in hot days?
to reduce trapped air to easily release heat.为了减少困在里面的空气轻易地散发出热能
We often shiver in the cold surrounding environment to...............
increase body temperature 增加体温
What are the systems that involved in water regulation?
endocrine system and excretory system 内分泌系统和排泄系统
