Grade 4 Science Systems in Animals PDF

Ajyal Al-Mawaheb school Science Semester 1 Grade 4 Chapter 2 Lesson 3 Systems in Animals Lesson 3 Systems In Animals Lesson vocabulary Skeletal system Muscular system Nervous system Respiratory system...

Ajyal Al-Mawaheb school Science Semester 1 Grade 4 Chapter 2 Lesson 3 Systems in Animals Lesson 3 Systems In Animals Lesson vocabulary Skeletal system Muscular system Nervous system Respiratory system Circulatory system Excretory system Digestive system Main idea Animals have organ systems work together. 1  Ajyal Al-Mawaheb school Science Semester 1 Grade 4 Chapter 2 Lesson 3 Systems in Animals How do animals move and sense change? Animals have different organ system. A system is a group of organs that work together. Q: complete 1) A system is a group of …………………. that work together. 2) Body systems are ……………………, ………………………, ……………………., ……………………………, ………………………..and………………………… The skeletal and muscular system Vertebrate bones make up its skeletal system. This is a frame that supports an animal body and help animal to move with muscular system A frog uses its strong leg muscles to jump. As in many animals, the muscles work in pairs to move the skeleton. The nervous system The master control of the body is the nervous system that is made of nerve cell. The nerves system of animals consists of a brain, spinal, nerves, and sense organs that help animals to use senses such as sight, hearing, taste, touch, and smell to detect changes in their surroundings. Owl has strong sight and it can see in the dark. 2  Ajyal Al-Mawaheb school Science Semester 1 Grade 4 Chapter 2 Lesson 3 Systems in Animals Q: complete: 1) Vertebrate bones make up its ……………………………... system. 2) A frog uses its strong leg ……………………….. to jump. 3) The nerves system of animals consists of a …..…………, spinal, …………….., and sense organs. 4) The muscular system help animal to………………………….. How do air and blood travel in the body? ? The respiratory system All animal cells need oxygen. To get oxygen from the air into their cells, most animals use a respiratory system that brings oxygen to the blood and removes wastes like dioxide gas from the blood. Q: complete: - Respiratory system that brings ……………………….. to the blood and removes wastes like……………………… gas from the blood. Adult salamanders have lungs. Like all amphibians, they also breathe through their skin. 3  Ajyal Al-Mawaheb school Science Semester 1 Grade 4 Chapter 2 Lesson 3 Systems in Animals The respiratory system and the circulatory system From body To body lung To lung From lung Gills To body Heart From body From lung From body To gills Heart The heart, blood, and blood vessel make up the circulatory system. The job of the circulatory system is to move blood through the body. The blood carries oxygen, food, and water to the body cells. It also removes the cell wastes. Q: what is the relationship between the respiratory system and the circulatory system? ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… The excretory system When cells break down food and other system chemicals, they produce wastes. The excretory system removes these wastes. The liver, kidneys, skin, and (lungs / gills) are excretory organs. Q: What are excretory substances? …………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………….. 4  Ajyal Al-Mawaheb school Science Semester 1 Grade 4 Chapter 2 Lesson 3 Systems in Animals How is food broken down? Animals take in food for?energy. Until that food is broken down, body cells can’t use that energy. The digestive system helps break down food. Q: complete: - The digestive system helps …………………………………. food. Mouth Esophagus Stomach Small intestine Q: what is the relationship between the respiratory system, the circulatory system and the digestive system? ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………… 5  Ajyal Al-Mawaheb school Science Semester 1 Grade 4 Chapter 2 Lesson 3 Systems in Animals Lesson dictionary Q: Write the words in their correct place under each picture Skeletal system Muscular system Nervous system Digestive system Respiratory system Circulatory system …………………………… …………………………… …………………………… …………………………… …………………………… …………………………… Chapter 3 lesson 1 Introduction to Ecosystem 6