Science

Revision Sheet For Final Exam

Term 1

Name :

Date : / 12 / 2019

Grade : 4 /

Dear Parents,

Please revise these worksheets with your child for the final

exam on Sunday 8 /12/ 2019 in addition the

required pages in the books as follows:

Life Science Chapter 3: Human Body.

Lesson 1: What Are the Skeletal and Muscular Systems?

Lesson 2: What Are the Respiratory and Circulatory Systems?

Lesson 4: What Are the Digestive and Nervous Systems?

Chapter 4: Animals.

Lesson 1: How Do Animals Grow and Reproduce?

Chapter 5: Plants.

Lesson 1: How Do Plants Grow and Survive?

NOTE- THE REVISION SHEET WITH ANSWERS, IS ON THE WEBSITE.

Chapter 5: Plants.

Lesson 1: How Do Plants Grow and Survive?

*Summary of the lesson:-

1) Plants have different structures that help them to grow and

survive:

Roots, stems, leaves, flowers, veins.

A. Roots : absorb water and nutrients from the soil. Roots fix the

plants in the soil.

- There are two types of roots: taproots and fibrous roots.

- A taproot is a large root with smaller branched roots growing out of

it. Carrot, turnips, and beets have this kind of root.

- Fibrous roots are roots that spread out in all direction. Onions, tree,

and grass have this kind of root .

B. Stems: carry water and minerals from the roots to the leaves and

carry food

from the leaves to the other parts of the plant. Stems also give

support to the plants.

C. Leaves: make food for the plant so the plant can grow and survive.

- Leaves have tiny holes that allow gases and water to pass through.

- The thorny leaves of a cactus help prevent water loss.

2) Photosynthesis: is the process in which a plant makes its own food.

- Plants need : sunlight, carbon dioxide, water, and chlorophyll for

photosynthesis.

- The products of photosynthesis are :oxygen and sugar.

3) Chlorophyll is: a substance in the plant and it is what makes plants

green.

Chapter 4: Animals.

Lesson 1: How Do Animals Grow and Reproduce?

*Summary of the lesson:-

1) Reproduction is:to make young of the same type of animal.

2) Life cycle is :the stages of growth and development.

3) The common stages in the life cycle of animals: birth, young,

adult, die.

4) A human’s life cycle similar to that of other animals :humans are

born, grow, become adults, and reproduce.

- The steps in the human life cycle :

Babies toddlers children teenagers adults.

5) Complete Metamorphosis: animals undergo four distinct stages.

Frogs and butterflies are examples of animals that undergo complete

metamorphosis.

-The four stages of complete metamorphosis are:

Egg larva pupa adult

6) Incomplete Metamorphosis: Other insects, such as termites,

grasshoppers, and cockroaches undergo a different type of

metamorphosis. During incomplete

metamorphosis, an insect goes through three different stages in its

life cycle.

-The three stages of incomplete metamorphosis are:

Egg nymph adult.

Chapter 3: Human Body.

Lesson 1: What Are the Skeletal and the Muscular Systems ?

Summary of the lesson:-

1) organ system: is a system that consists of organs.

2) organ: is a part of the body that does a particular job.

3) The skeletal system consists of bones.

4) The skeletal system: supports the body, help us move, and

protect organs.

- The main parts of the skeleton: skull, rib cage, backbone, arms,

and legs

5) Bones have different functions:

-The skull protects the brain.

-The rib cage protects the heart and the lungs.

-Some bones help the body move.

-The human skeleton has 206 bones.

6) Bones connect at joints. Joints help us move.

7) Some joints, such as shoulder and hip joints, move in all

directions, while other joints, such as knee and elbow joints, move

only forward and backward.

8) The muscular system works with the skeletal system to move the

body.

9) Muscles are made up of elastic tissue. There are about

650 muscles in the human body.

10) Involuntary muscles are muscles that we cannot control.

- There are two types of involuntary muscles:

1. cardiac muscles(heart). 2. Smooth muscles(stomach,

esophagus).

11) Voluntary muscles are muscles that we can control and use when

we decide to(skeletal muscles).

12) Bones and skeletal muscles work together: to move your body

and give the body its shape.

13) Muscles work in pairs: When one muscle contracts, the opposite

muscle relaxes.

Lesson 2: What Are the Respiratory and the Circulatory Systems?

Summary of the lesson:-

* The respiratory system takes in oxygen and releases carbon

dioxide.

-The parts of respiratory system are: nose, larynx, trachea,

lungs, and diaphragm.

1) Larynx: is the organ in which the voice is produced.

2) Trachea: is the organ that transports air from the larynx to the

lungs.

- Air moves from the nose to the larynx, then to the trachea, and

then to the lungs.

- Breathing through the nose better than breathing through the

mouth Why? The nose makes air warm, clean, and moist.

- Air we inhale has more oxygen than air we exhale, while air we

exhale has more carbon dioxide and water vapor than air we inhale.

*The circulatory system:

1) Arteries: they are blood vessels that carry blood away from the

heart.

2) Veins: they are blood vessels that carry blood from the body

parts toward the heart.

3) Valves: they are flaps that allow blood to move in one direction.

-The parts of circulatory system are: heart, blood, and blood

vessels (veins, arteries).

-The job of the circulatory system is to circulate, or move the

blood through the whole body.

-The heart is an organ that pumps the blood throughout the whole

body.

-Blood flows from the right atrium to the right ventricle, which

pumps it to the lungs. The blood is now rich with oxygen and moves

from the lungs to the left atrium, moves into the left ventricle, and

moves throughout the body.

Summary of the lesson 3:- What Are the Digestive and the

Nervous

Systems ?

*DIGESTIVE SYSTEM

1) The digestive system breaks food down into nutrients that are

used by

the body.

2) Digest food :means to break food down into materials the body

can

use.

3) The main parts of the digestive system:

Mouth, esophagus , stomach, small intestine, large intestine, pancreas,

liver

, gallbladder.

4) The small intestine is the part of your body digests and absorbs

food .

5) Water is absorbed in the large intestine.

6) Digestion starts in the mouth and finishes in the small intestine.

7) stomach: an organ that squeezes food and mixes it with liquid.

*The Nervous System and Brain

1) The function of the nervous system :it controls all the parts of

your body.

2) The nervous system consists of the brain, spinal cord, and nerves.

3) the function of the brain:

- It controls voluntary and involuntary actions.

- It sends and receives messages to and from the body.

4) The spinal cord :carries messages between the brain and the rest

of the body and is responsible for reflex actions.

5) Nerves : carry information from receptors to the brain and from

the brain to the body parts.

6) A reflex : it is a very quick automatic action that happens without

thinking.

7) Receptors : are parts of the body that receive information.

Chapter 5: Plants.

Lesson 1: How Do Plants Grow and Survive?

Q1. Fill in the blank.

photosynthesis chlorophyll Stems

1. ---------------carry water and minerals from the roots to the leaves.

2. The process in which plant makes its own food is called --------------.

3. A substance in the plant that makes the plant green is ---------------.

Q2. What is the purpose of a leaf?

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Q3.True or False.

1.A taproot is a large root with smaller branched roots growing out of

it. Carrot, turnips, and beets have this kind of root.( )

2.Fibrouse roots are roots that spread out in all direction. Onions,

tree, and grass have this kind of root .( )

3.The thorny leaves of a cactus help prevent water loss. .( )

Chapter 4: Animals.

Lesson 1: How Do Animals Grow and Reproduce?

Q1. What is the common life cycle for mammals?

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Q2. True or False.

1. A butterfly’s life cycle has a complete metamorphosis.( )

2. A cockroach’s life cycle has a complete metamorphosis.( )

3. Reproduction is making young of the same type of animal.( )

4. life cycle the stages of growth and development.( )

Q3.Some animals, such as frogs or insects, go through a series of

changes called metamorphosis. Put the four stages of complete

metamorphosis in correct order below.

Q4.Put the three stages of incomplete metamorphosis in order below.

Back bone

Ribcage

Skull

Ribcage

Q5. Type each step in the human life cycle shown below.

Chapter 3: Human Body.

Lesson 1: What Are the Skeletal and the Muscular Systems ?

Q1. For the images below, type the piece of the skeletal system that

protects it.

--------------- --------------

Q2. What is the importance of joints?

-------------------------------------------------------------------------------

Q3. How do the skeletal and muscular system work together?

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Muscular system respiratory system skeletal system

Digestive system circulatory system involuntary muscles

Q4.Complete the cause and effect chart below.

Cause Effect

One muscle contracts

Q5. Choose the correct answer.

1. Which is a voluntary muscle?

a. the teeth.

b. the stomach.

c. the arm.

2. What is the muscular system made of?

a. elastic tissue.

b. smooth organs.

c. skin.

Q6. Fill in the blanks. Use the word bank to help.

-The system for getting nutrients from food is called the --------------

- The system for taking in oxygen is called the ---------------------------

- The system for moving blood around the body is called the ------------

- The system involved in movement are called the ------------------------

,and the -------------------------.

- Muscles that we cannot control are called --------------------------.

Lesson 2: What Are the Respiratory and the Circulatory Systems?

Q1. Label the parts of the respiratory system below.

Q2.What is the function of the respiratory system?

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Q3.Fill in the blanks.

Q4.What is the function of the respiratory system?

-----------------------------------------------------------------------------

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Q5. Choose the correct answer.

1.The blood vessels that carry blood away from the heart are-------

a. veins. b. arteries. c. valves.

2.The vocal cords are found in the --------------

a. larynx. b. trachea. Trachea c. lungs.

3.The blood vessels that carry blood toward the heart are---------

a. veins.

b. arteries.

c. valves.

lesson 3:- What Are the Digestive and the Nervous

Systems ?

*DIGESTIVE SYSTEM

Q1.Label each part of the digestive system below.

Q2. What is the function of the digestive system?

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Q3. Circle the correct answer.

1. Which activity will increase your heart rate?

a. watching TV. b.sleeping. c. exercise.

2. Food moves from the stomach to the -----------------.

a. lungs . b. heart. c. small intestine.

3.A very quick automatic action is called a -------------------.

a. digest.b. b.brain. c. reflex.

4. ------------ an organ that squeezes food and mixes it with

liquid.

a. Lungs . b. Stomach. c. Heart.

Q4.Number the organs listed below in the order through which food

passes.

_________ stomach _________ small intestine

_________ large intestine _________ esophagus

_________ mouth

*The Nervous System and Brain

Q1. Draw circles on the body parts

that act as receptors.

Q2. What does the nervous system consist of?

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Q3.What is the job of the nerves system?

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Q4.Match each term in column A with its description in column B.