CBSE Class 4 Science Teeth Worksheet

You can do it yourself. Read the information given to you. Label the diagram canines - the pointy tooth located between the incisors and the premolars. A canine tooth has 1 root. Adults have 4 canine teeth (2 in the top jaw and 2 in the bottom jaw). Canine means, "of or like a dog." incisors - the front teeth, used for cutting food. An incisor has 1 root. Adults have 8 incisors (4 in the top jaw and 4 in the bottom jaw) premolars - the teeth located between the canine and the molars. A premolar tooth has 1 root. Bicuspids have two points (cusps) at the top. Adults have 8 premolar (4 in the top jaw and 4 in the bottom jaw) molars - the relatively flat teeth located towards the back of the mouth, used for grinding food. Molars in the top jaw have 3 roots; molars in the lower jaw have 2 roots. Adults have 12 molars (6 in the top jaw and 6 in the bottom jaw)

2. Complete it by writing the name of the food. Protein carbohydrate fat mineral vitamins water

3. Write 10 lines on balanced diet. (100 words)

Q1 Unscramble the words and write the answers.

a. The soft part of the tooth with nerves and blood vessels__________ (lupp)

b. The hardest part of the teeth _______________ (leemna)

c. The tearing teeth _________________ (enncias)

d. Teeth doctor________________ (ttisden)

e. Harmful germs that act on the food particles stuck between the teeth __________________ (aatrebci)

f. A yellow substance formed on the teeth_________________ (apluqe)

g. Four broad, flat teeth used for grinding/chewing_____________ (amolr)

h. Cutting teeth ________________ (iicnsor)

Q2 Read the given sentences.Then answer the questions in a few words.

Jaya is 13 years old. Her baby brother Yash is 3 months old.

a. What type of teeth does Jaya have? ----------------------------------------------------

b. Which type of food can Yash have? ------------------------------------------------------

c. Which type of teeth will Yash have when he will be 3 years old? ------------

d. Why should Jaya visit her dentist regularly? -----------------------------

e. What type of food should Jaya eat to keep her teeth strong? ------------------------------

Q1 Write 2 ways to protect your teeth?

What is the yellow layer on teeth called?_______

Q2 Your Parents often say you should have healthy eating habits. Write any two of these habits.

Q3 Match the following .

Q4 How does eating salads help our teeth?

Question. The number of teeth in permanent set of teeth is
a) 22
b) 42
c) 32
d) 30

Answer : C

Question. The sharp teeth in front part of a jaw are called
a) canines
b) Incisors
c) molars
d) premolars

Answer : B

Question. Tick the odd one out.
a) Crown
b) root
c) stem
d) Neck

Answer : C

Fill in the blanks : 

Question. Teeth that help in tearing are called _______

Answer : canines

Question. The portion between the crown and the root of our tooth is _______

Answer : neck

Question. The substance harder than bone is _______

Answer : enamel

Question. The doctor who takes care of our teeth is known as _______

Answer : dentist

Question. Infant's teeth are known as _______

Answer : milk teeth

Define :

Question. Incisors
Answer : Cutting teeth.

Question. Molars
Answer : Chewing and grinding teeth.

Question. Milk teeth
Answer : Temporary set of teeth in small children.

Question. Dentine
Answer : The substance present in the tooth.

Question. Premolars
Answer : Cracking and grinding teeth.

Question. Enamel
Answer : A strong outermost layer or coating of the tooth.

Question. Canines
Answer : Tearing teeth.

Very Short Answer Type Questions : 

Question. List out the four types of teeth.
Answer : 1. Incisors
2. Canines
3.premolars
4.molars

Question. Draw a well labelled diagram of structure of a tooth.
Answer :

Question. Name the two sets of teeth in human beings.
Answer : Milk teeth and permanent teeth

Question. What are the main parts of our tooth?
Answer : Tooth consist of crown, neck and root.

Short Answer Type Questions : 

Question. Describe the role of four types of teeth in digestion.
Answer : The role of 4 types of teeth in digestion are as follows
• Incisors – They are used to bite the food and shovel it inwards.
• Canines- They are used for tearing the food.
• Premolars- They are used for crushing the food.
• Molars- They are used for grinding the food.

Question. How should we take Care of our teeth?
Answer : We should take care of our mouth in the following ways.
• After every meal wash our mouth ( gargling).
• Don't eat too hot or too cold food.
• Brush each area at least 5- 7 minutes.
• Well balanced diet is to be taken to give more strength to our teeth.

Question. Draw the well labelled diagrams
Answer : • Structure of a tooth
• Types of human Teeth

Q-1 FILL IN THE BLANKS

   a) A tooth has_________, neck and________ parts.

   b) A tooth has ________ ,_________ and _________ layers.

   c) _________ results in bad breath, bleeding of gums and indigestion.

   d) Eating too many________ causes tooth decay.

   e) A new born baby has ________ teeth.

   f) Milk teeth are also called _________.

   g) __________ mineral and vitamin__________ are important for healthy teeth.

   h) Brush your teeth _________ and __________ before going to bed.

   i) __________ your mouth after every meal.

   j) The four chisel shaped teeth at the front of each jaw are called ________.

   k) Disease causing microbes are called _________.

   l) __________ is the disease caused by protozoa.

Q-2 WRITE ONE WORD ANSWER

   a) Teeth which is used to bite our food.

   b) The outer cover of a tooth.

   c) The soft part present inside the dentine.

   d) The part of tooth present inside the gum.

   e) The teeth used to tear the food.

   f) The hardest substance present in our body.

Q-3 MATCH THE FOLLOWING

   a) Incisors              a) tearing teeth

   b) Canines             b) hardest substance

   c) Premolars          c) virus

   d) Molars               d) cutting teeth

   e) Enamel              e) cracking teeth

   f) Microbes             f) grinding teeth

Q-4 Draw a diagram to show different layers of a tooth and label all the parts.

Q-5 What is the difference between temporary and permanent teeth. Draw the two sets of teeth.