Motion and Energy
State the SI unit for time.
Seconds
Which variable will be measured in an experiment?
Dependant
Whatt is the name of the chemicals that go into a chemical reaction to form the products?
Reactants
Name the first person to propose natural selection.
Charles Darwin
Name the type of nuclear reaction that produces energy in stars.
Nuclear fusion.
State what is represented by the gradient of a speed/time graph.
Acceleration
How do you make an experiment accurate? Provide one example.
Use appropriate measuring equipment. Measuring cylinder, tape measure, scales.
Would combustion be an exothermic or endothermic reaction?
Exothermic
List two pieces of evidence that support evolution.
fossils, comparitive anatomy, DNA, biogeography and embryology
Does gravity increase or decrease as you move away from an object?
Decrease
The speedo in a car is reading 45km/h. Is that instantaneous or average speed?
Instantaneous
Where can you write your results whilst completing an experiment?
In an appropriately set out table.
What product is formed from the chemical reaction between 2Mg and 0xygen?
Magnesium oxide
True or False: All variation in a species is caused by natural selection.
False. Variation in a species is NOT caused by natural selection.
Do we call billions of stars in a rotating system held together by gravitational attraction a galaxy or nebula?
Galaxy
What is Newton's third law?
For every action there is an opposite and equal reaction.
List three essential parts to a graph.
Title, y-axis title, x-axis title, appropriate spacing (numbers)
Describe a precipitation reaction.
Soluble reactants produce a nonsoluble product.
Name two vestigial organs on any animals.
Humans: tail bone, appendix, nipples on men.
Whales hind legs
wings on flightless birds.
Is the universe expanding or shrinking?
Expanding.
Which will have greater inertia, a suitcase packed for a holiday or when it is unpacked at home?
Objects with more mass have greater inertia. Therefore, the full suitcase.
In which part of a scientific report should you discuss possible improvements to your experiment?
Results, Methodology, Discussion, Conclusion
Discussion
Provide two of the five ways that rate of reaction can be controlled.
Temperature, concentration of reactants, surface area, agitation, catalyst
List three examples of variation in humans
eye colour, height, hair colour.
Light from stars moving towards us will be compressed. Will that be a blue-shift or a red-shift?
Blue shift.