science skills (T3) (test) Flashcards
an aim always starts with the word
to
A/An ________ is usually worded as a question to answer
problem
the result of an experiment can ____ a hypothesis. However, they never____ that the hypothesis is correct
support
prove
A/An ____ is an educated guess about how things work
hypothesis
the ___ of an experiment is the purpose of the experiment
aim
a hypothesis can be ___ by carrying out a scientific experment
tested
we can use a hypothesis to make
predictions
a good hypothesis is based on___ and ofter also on research
observations
A/An ___ is a statement that explains the observation. it is measurable and can be tested. A/An ___ is a good guess about what happens if the hypothesis is true
hypothesis
prediction
what is this ?
Mould grows fastest in warm and humid environments
observation
. No mould will grow on bread if it is stored in the fridge
prediction
To find out the temperature at which mould grows fastest
aim
Ceramic is a better insulator than plastic
hypothesis
The variable that is deliberately changed in the experiment
independent
The variable that is measured in the experiment
dependent
Variable that must be kept constant to ensure that the experiment is fair
controlled
he term _____ describes measurements that are precise and correct.
accurate
The )_____indicates the number of plants, animals or other items used in an experiment.
sample size
The _______ variables must be kept constant in an experiment.
controlled
a ______ experiment measures what it is supposed to test.
valid
The _______ variable is deliberately changed in an experiment.
independent
Each repetition of an experiment is called a ____
trial
A ____ experiment produces similar results each time it is repeated
reliavble
A list of the hazards in an experiment and how these will be minimised is called a _________
risk assessment
