Christmas Tests 2015

Question 1

Functions of cornea

Answer 1

Allows light to enter the eye

Question 2

What is synovial fluid

Answer 2

A liquid that allows the joint to move more freely

Question 3

What is the joint in the skull

Answer 3

Brain

Question 4

How to prevent rusting

Answer 4

Cover material with material to prevent water and oxygen getting on it e.g. Painting

Question 5

What is the difference between sensory and motor neurons

Answer 5

Sensory neurons send messages to the brain. Motor neurons send messages away from the brain

Question 6

How does sun go to earth

Answer 6

As the earth rotates, it also moves around the sun

Question 7

Define malleable

Answer 7

A metal that can be stretched

Question 8

Define ductile

Answer 8

Able to be deformed with out losing toughness

Question 9

Covalent bonding

Answer 9

Formed when electrons are shared between non metals

Question 10

Which comes first zinc copper calcium magnesium

Answer 10

Calcium, magnesium, zinc, copper

Question 11

Diagram of bulb and conclusion

Answer 11

Bulb. Metal electrons.

Conclusion - didn’t light because covalent compounds don’t conduct electricity

Question 12

Define molecule

Answer 12

Groups of two or more atoms joined together

Question 13

Structure of methane

Answer 13

CH4

Question 14

Covalent bonding examples

Answer 14

H2
H11 H11
1p 1p
0n . - . 0n

Question 15

Ionic bonding

Answer 15

12 24 Mg. 8 18 O
After
No of protons=12+ No of protons =8+
No of electrons=10- No of electrons=10-

Question 16

Functions of the parts of the kidneys

Answer 16

Kidneys-remove excess water salts and urea from the blood to form urine. Renal veins-take blood away from kidneys the blood has no waste products. Renal artery-carry urine from the kidneys to the bladder. Bladder-stores urine. Uretha-tube that takes urine from the bladder and passes it out of the body.

Question 17

What is an antagonistic pair?

Answer 17

Two muscles which have opposite effects