Light
What are the 2 angles called in the light diagram?
What are the 3 primary colours?
incident ray and reflected ray
Red, green and blue
Name the 3 different types of blood cells.
RBCs, WBCs and platelets.
What are the 5 main types of nutrients which is essential for the human body?
1. vitamins
2. minerals
3. carbohydrates
4. protein
5. fat
Does the Earth have a magnetic field?
yes
Name the first 10 elements of the periodic table
Hydrogen, helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine and Neon
What are the 2 angles called in the light diagram?
(incident ray and reflected ray)
Which blood cell defends the body from attacks from viruses and harmful bacteria?
White blood cells
What are proteins made of?
hundreds and thousands of amino acid particles
what type of equipment is used to investigate magnetic fields?
a plotting compass
What is an alloy?
A substance made of two or more metals or of a metal and nonmetallic materials.
What is the splitting up of white light into different colours called?
dispersion
name the 2 functions the blood does in the body
1. Help tranport oxygen
2. removes carbon dioxide
What is Vitamin A important for?
Involved in allowing the eyes to see in dim light
how is the magnetic field when two like-poles point each other?
When two like-poles point together, the two magnets fields point in opposite directions
In what order is the periodic table arranged?
In the increasing order of the atomic number
What is the difference between a ray and a beam?
A ray is single channel of light although a beam is multiple channels of light
White blood cells defend the body from these disease-causing microorganisms. Name it.
Pathogens
Fill the blanks:
When there is a lack of iron, there is a lack of _____ and therefore lesser _____. So the person with is feels permanently _____.
1. Haemoglobin
2. Oxygen
3. tired
Are all metals magnetic?
What is the symbol for Copper?
Cu
What are the secondary colors?
(magenta, cyan and yellow)
What is the blood disorder which is inherited. It is when the red blood cells release their oxygen to other cells in the body changing the shape into a sickle shape?
Sickle cell Anemia
what is the least needed nutrient in the food pyramid?
Fat
what is an elctro magnet made of?
coil of wire surrounding a piece of iron/iron nail
How many elements are there in the periodic table?
118 elements