Health Education Test

Hi! Did you score 20 out of 20?

The respiratory system

Go and read about the windpipe...
http://harunyahya.biz/kids/ourbodies09.html

Science Revision (Answers)

1) The diagram shows a human respiratory system.
a) What is P?
P is a windpipe.

b) How does P help to prevent the system from getting an infection?

It has manh tiny hairs and mucus that trap dust particles and
germs in the air. Dust particles and germs can cause lung
infection and other respiratory diseases.


2a) What is the main function of the skeletal part shown on the right?

It protects the brain.

b) What type of joint does it have?

It has a fixed socket.

3) How is blood circulated in our body? Draw a simple diagram to show our
circulatory system?

** Have problem posting this answer here. Show you tomorrow.

4. Fill in the organs that carry out the activities in the table below:

Small intestine
Digested food passes through its wall and enters the blood circulatory system.

Lungs
Blood exchanges its carbon dioxide for oxygen.

Heart
Blood rich in oxygen is pumped to other body parts.

5. Why will a person die if he loses a lot of blood in an accident?
Blood carries oxygen, food and water to our body parts. When a person
loses a lot of blood, the circulation of blood round the body will slow down.
When not enough oxygen reaches the brain, the person will faint and die
very soon.

6. Fill in the blood vessels that carry out the activities in the table below.

Arteries
They carry blood from the heart to other body parts.

Veins
They carry blood from other body parts to the heart.

Capillaries

They connect the other two types of blood vessels.
They allow the exchange of oxygen, nutrients and water for carbon dioxide and waste products in the body.


7. John shone different coloured lights on a red apple. He recorded the
observations in the table below.
What conclusion could he draw from this experiment?
The colour of the apple appeared different when different coloured lights fell on it.

8. Gaps prevent buckling of concrete on hot days and cracking when it is cooled suddenly.

Gaps prevent derailment due to buckling of tracks on hot days.

Rollers give allowance for expansion and contraction of the bridge.

Cables can sag on hot days and tighten on cold nights/days without snapping.


9. **The light source and the shadow of the pole should be at the opposite sides of
the pole.

10. What is the purpose of having mirrors in the above places?

A : A security mirror provides a shopkeeper a wider scope of view.

B : A blind corner mirror helps road users see round a bend.

Revision

Hi children!

I hope you have been spending your time wisely.

Click on the following links to revise for your examination.

http://www.vtaide.com/png/assess.htm
http://www.bbc.co.uk/schools/scienceclips/ages/8_9/keeping_warm.shtml
http://coolcosmos.ipac.caltech.edu/cosmic_classroom/light_lessons/thermal/measure.html
http://www.biologyinmotion.com/cardio/
http://www.nlm.nih.gov/changingthefaceofmedicine/activities/circulatory.html
http://www.bbc.co.uk/schools/scienceclips/ages/9_10/keeping_healthy.shtml
http://www.bbc.co.uk/scotland/education/bitesize/standard/biology/the_body_in_action/the_need_for_energy_rev6.shtml
http://www.bbc.co.uk/scotland/education/bitesize/standard/biology/the_body_in_action/the_need_for_energy_rev7.shtml
http://www.bbc.co.uk/schools/ks3bitesize/science/physics/light_1.shtml
ttp://www.bbc.co.uk/schools/ks3bitesize/science/physics/light_2.shtml


Ask your parents for permission before you go online.

Tessellations

Hi everyone!
If you were absent when I showed the following video clip, below is the link:
http://www.evideo.edu.sg/programme.asp?

If you are interested in some interactive activities , you can access the following:
http://www.shodor.org/interactivate/activities/tessellate/?version=1.6.0_01&browser=MSIE&vendor=Sun_Microsystems_Inc.