Biology
Double points: What is the function of the cell membrane?
To let substances in and out of the cell.
Mercury
The overall force acting on an object.
What is the pH of a neutral substance?
pH 7
What is the longest river in the world?
The river Nile
Which organelle in a plant carries out photosynthesis?
Chlorophyll/chloroplasts
What is the first stage in the life cycle of a star?
Nebulae - Clouds of dust and gas come together under pressure by gravitational forces.
Name the energy store found in a spring.
Double points: Describe the reactivity of group 1 elements? Give at least 1 property.
Soft to cut
Very reactive with oxygen - stored in oil
Which scientist developed the theory of evolution by natural selection?
Charles Darwin
Define the term 'tissue'.
A group of cells working together to perform the same function.
Gas giant - made of entirely gas held together by gravitational forces with no solid surfaces. Jupiter
Ice giant - made of entirely ice, can still have no solid surface. Neptune / Uranus
Explain the law of conservation of energy.
Energy cant be destroyed or created, only transferred.
Name all the colours that are shown by a universal indicator solution.
Red, Orange, Yellow, Green, Blue, Purple
Adverb
Describe diffusion.
The movement of particles from a high concentration to a low concentration.
What is a white dwarf?
Double points: Describe how air resistance causes a parachutist to slow down.
When the parachute is open, there are more air particles hitting against the parachute. This increases the upward force acting on the person. Forces start to balanced and therefore they start to slow down.
(Do not involve electrical conductor in your answer)
Cooking equipment - Good heat conductor - metals can conduct heat which is good for cooking or keeping food warm.
Malleable - Metals can be bent into shape to make different objects.
In which year did world war 2 begin?
A - 1939
B - 1940
C - 1941
A - 1939
Describe the process of natural selection and explain how it leads to evolution.
Variation now reproduces more than others - passing on the variation.
Population of the variation increases over generations = evolution.
Describe the stages a massive star goes through before coming a neutron star or black hole.
Massive star --> Red Supergiant --> Supernova --> Neutron star/black hole.
On a distance-time graph the speed of an object is found by calculating the (a)______.
A horizontal line represents (b)_ _________ _____.
A straight but slanted line represents (c)_ ______ ____.
(a) gradient.
(b) a stationary object.
(c) a constant speed.
(HINT: Botany - study of plant life)
Different plants grow in different soils. Some acidic, some alkaline. Indicators can identify the pH of a soil and therefore it can be adjusted to the suitable acidity or alkalinity for the plant/vegetable/fruit.
Double points: Which country has the most time zones, including overseas territories?
France