Motion
A What is at it's maximum when a wrecking ball is at the bottom of its swing.
Kinetic energy
Recall the general name of the chemicals that combine to form the products of a chemical reaction.
Reactants
Name the first person to propose the process of natural selection.
Charles Darwin
Which variable will be measured in an experiment?
Dependent
Name the type of nuclear reaction that produces energy in stars.
Nuclear fusion
What is the gradient of a speed/time graph
acceleration
What are the reactants and products involved in respiration.
reactants: Oxygen, Sugar (Glucose)
products: Carbon Dioxide and Water
List 4 types of evidence used to support the theory of evolution.
fossils, comparitive anatomy, DNA, biogeography, embryology
How do you make an experiment accurate? Provide one example.
Use appropriate measuring equipment. Measuring cylinder, tape measure, scales.
What happens to gravity as you move away from an object?
Decreases
Mr Bell has a displacement of 250m north. What does that mean?
The final point in his journey is 250m north of where he started.
A particular atom has 8 protons, 8 electrons and 9 neutrons.
What is its atomic number?
8
True or False. Homologous structures have to perform the same function in different species.
False. ...do NOT always perform the same function
Where can you write your results whilst completing an experiment?
An appropriate table
What do we call billions of stars in a rotating system held together by gravitational attraction?
A galaxy
Use Newtons first law to explain why it would be dangerous to have loose objects in your car when you have an accident.
Newtons first law explains that an object will contine in motion until it is acted upon by another force. Therefore, any loose objects will continue to move foward until they hit another object. Maybe the driver.
What are the products formed when an acid and base neutralise each other?
Salt and water
Name four vestigial organs on any animals.
Humans: tail bone, appendix, nipples on men.
Whales hind legs
wings on flightless birds.
List three essential parts to a graph.
Labels, titles, units
Light from stars moving towards us will be compressed. Will that be a blue-shift or a red-shift?
Blue-shift
Identify the SI units from the following list:
kilogram, centimetre, second, gram, milligram, year, hour, tonne, minute, kilometre
Kilogram and Second
Describe the changes that are normally seen during a precipitation reaction.
A solid forms, making the solution cloudy.
List three examples of variation in humans
eye colour, height, hair colour.
In which part of a scientific report should you discuss possible improvements to your experiment?
Discussion
Which gas is evidence of The Big Bang Theory and why?
Helium is evidence for the Big Bang because its observed abundance in the universe is consistent with the amount predicted to have been formed during the first few minutes after the Big Bang through a process called Big Bang nucleosynthesis.