Forces
Energy
Our Chemical World
Human Body and Plant Biology
Science Practical Skills
100
Name the main force acting here.
Gravity/air resistance
100
Name 2 kinds of potential energy
Chemical, Gravitational, Nuclear or Elastic
100
What are the three subatomic particles that make up an atom?
Proton, neutron and electron
100
What is the flap on the oesophagus that prevents food from going into the lungs?
The epiglottis
100
What is a hypothesis?
A hypothesis is an educated guess or proposed explanation for something which will be tested by your experiment
200
What is the net force on the object?
9 N
200
What are the three kinds of heat transfer?
Conduction, convection and radiation
200
Two clear unknown liquids are mixed. The solution then bubbles and changes colour, is this chemical or physical change?
Chemical
200
White blood cells are used in the body's immune response. True or false?
True
200
A student wants to investigate how light affects plant growth. Name two controlled variables.
- Type of plant
- Soil
- Amount plants get watered.
300
Samantha is 60 kg. She lives on Neptune where the Gravitational Force Constant is 11.5. Calculate her weight in Newtons.
(Weight = Mass x Gravitational Force Constant)
690 N
300
The ball starts at point A and rolls to point G.
At what letter does the ball have the greatest kinetic energy?
D
300
How many protons does this atom have?
60
300
What is the role of carbohydrates for nutrition?
It is a source of energy for the body.
300
In an experiment testing how the temperature of water affects the time taken for sugar to dissolve, what is my dependant variable?
The time taken for sugar to dissolve
400
Are these repelling or attracting?
Attracting
400
A plane moving at 240 m/s has a mass of 2000 kg. What is the kinetic energy of the plane?
KE=1/2*m*v^2
420,000 J
400
What element is this?
Carbon
400
What is the missing part of our photosynthesis equation?
CO2
400
What equipment would I use to measure the volume of a liquid?
Volumetric flask
500
Georgia is 50 kg. She lives on an unknown planet where she weighs 250 N. Find out the Gravitational Force Constant for her planet.
(Weight = Mass x Gravitational Force Constant)
5 N/kg
500
A boy sitting in a tree is 5 metres high, and he weighs 40 kg.
What is his Gravitational Potential Energy? (g=10)
GPE= m*g*h
2000 J
500
What was the main discovery from Rutherford's famous "Gold Foil" experiment?
He fired electrons at gold atoms (in foil) and found that only a small amount of electrons were deflected, showing that the atom was mostly empty space.
500
What is the chemical in blood that helps carry oxygen?
Haemoglobin
500
In an experiment where I test 5 different soft drinks on their acidity, what is my independant variable?
The soft drink type