Forensic Science
Acids and Alkali
Circulation
Respiration
Immune System
Healthy Living (Nutrition and Digestion)
Light
Sound
100

What happens to red litmus paper in an alkali?

Changes to blue

100

 What is the name of the structure marked with the letter D?

 Left Bronchi

100

True or False

Pitfall traps are used to measure the population of plants in an area

False

100

True or False

Sound travels in a vacuum

False: sound needs particles to travel

200

Mention an acid and an alkali commonly used in the lab

HCl and NaOH

200

Capillaries help deliver ___________ (nitrogen/oxygen/carbon dioxide) to cells and pick up _____________ (nitrogen/oxygen/carbon dioxide) as a waste product.

oxygen, carbon dioxide

200

Sacs where gas exchange occurs.

Alveoli

200

The pH of the soil in Malta is approximately:

pH 7.5/8

200

Mention the structure in the digestive system that:

a.  prevents food from entering the trachea

b.  where HCl acid is added to digest food

a.  epiglottis 

b.  stomach

200

Fill in with suitable words

______________ (opaque/transparent/translucent) objects block all light passing through, creating darkness behind them called _________________ (beam/shadow/strand).

Opaque

Shadow

300

A solution with a pH 6 is a:

Strong Acid, Mild Acid, Strong Alkali, Mild Alkali, Neutral.

Mild Acid

300

Name the piece of equipment used to estimate the number of plants in an area

Quadrat (Quadrat Sampling)

300

Why do we need proteins in our diet?  Mention 1 function

For growth & repair of cells and muscles

For hormones

for immune system

300

The part of the eye where an image is formed

Retina

400
What does the pH of a substance tell you?
The pH scale shows if a substance is acidic, alkaline or neutral and the strength of the substance. 
400

Explain, giving a reason,  what happens to your heart rate when you exercise.

Heart rate increases since the body needs more oxygen to be delivered to the cells.  Oxygen is needed to convert stored glucose to energy in a process called respiration.

400

Mention 2 activities that are not allowed in protected Natura 2000 sites

using motorbikes

hunting

cutting down trees

campfires

trapping organisms

400

Mention the 7 basic food substances

Carbohydrates, Proteins, Fats, Vitamins & Minerals, Fibre (roughage), Water.

400

Explain why we can see a yellow flower as "yellow"

Yellow objects absorb all colours of the visible spectrum except for yellow which is reflected back 

500

Give a word equation for the reaction between a metal and an acid

metal + acid  salt + hydrogen

500

Mention three factors that can lead to heart disease

Smoking, not exercising enough, unhealthy diet (sugars, cholesterol, junk food), family history, underlying medical conditions (diabetes, high blood pressure)

500

Mention an adaptation of flowers that are insect pollinated

Mention an adaptation of plants growing in hot climates

brightly-coloured petals/scented


Thick waxy leaves

500

Mechanical and physical breakdown of food starts in the oral cavity (mouth)

a.  What brings about the mechanical breakdown of food (physical change)?

b.  What brings about the chemical breakdown of food?

a.  teeth

b.  enzymes

500

Which part of the ear:

a.   collects sound waves?

b.   amplifies sound?

c.   changes sound waves into electrical energy?

a.   pinna

b.   3 bones

c.   cochlea

600

Match the universal indicator colour change to the solution

       red - yellow - green - blue - purple

neutral             strong acid         strong alkali

weak acid                weak alkali


red: strong acid

yellow: weak acid

green: neutral

blue: weak alkali

purple: strong alkali

600

John's typical breakfast includes: eggs, sausages, bacon, beans & toast.

Suggest an alternative filling breakfast giving reasons why this healthier version is ideal (mention substances in your breakfast etc.) 

whatever mentioned if relevant and with appropriate reasons

e.g.  wholemeal cereal fortified with vitamins

wholemeal: for fibre

vitamins: needed to prevent diseases

lower in fats but high in starch (carbohydrates) to provide energy stores needed to start the day.