Grade 4 Oxford Primary Science Unit 2 Teeth

Solved Excercise with words and their meanings, Short Questions and Their Answer for the students of Grade 4 Oxford Primary Science Unit 2 Teeth

Grade 4 Oxford Primary Science Unit 2 Teeth

Unit 2 - TEETH

WORDS MEANING WORD MEANING
decay تباہ ہونا avoid پرہیز کرنا
permanents مستقل create پیدا کرنا
chop چھوٹے ٹکڑوں میں کاٹنا tear چیرنا
toughest سب سے زیادہ سخت sticky stuff چپکنے والی شے
crush دانتوں سے مسلنا

Question/Answer:

  1. What are the child's first set of teeth called?
    A child's first set of teeth are called milk teeth or baby teeth.

  2. Why do the teeth decay?
    Ans: Plaque creates holes in the teeth and causes tooth decay.

  3. Which teeth are used for grinding food?
    Ans: Molars are used for grinding food.

  4. How can you take good care of your teeth?
    Ans: We can take good care of our teeth by
    1. Brushing our teeth with fluoride toothpaste twice a day especially before going to bed.
    2. visiting a dentist at least once in six months.
    3. Drinking milk every day and eating a balanced diet.
    4. Avoiding too many sweets and sweetened drinks.

  5. What is plaque?
    Ans: A thin sticky layer of germs is called plaque.

  6. Which teeth are used for chewing food?
    Ans: Premolars are used for chewing food.

  7. What are incisors?
    Ans: The teeth at the front of our mouth are used for cutting or biting these are called incisors.

  8. What are canine teeth?
    Ans: The pointy teeth beside our incisors are called canine teeth.

Fill in the blanks

  • An adult has a set of _ _ _ _ _ _ _ _ _ _ _ _ permanent teeth.
  • Molars are the _ _ _ _ _ _ _ _ _ _ _ _ _ _ of all the teeth.
  • Milk teeth are _ _ _ _ _ _ _ _ _ _ _ _ _ _ in all.

Note:

  • Draw and label the different types of permanent teeth