WorksheetsS2 L4 Valid and sound
Total questions: 14
Worksheet time: 9mins
Is the following argument valid?
All humans are mortal.
Plato was a human.
Therefore, Plato was mortal.
Yes
No
Is the following argument valid?
All singers are robots.
Taylor Swift is a singer.
Therefore, Taylor Swift is a robot.
Yes
No
Is the following argument valid?
All cartoon characters have a funny voice.
Mickey Mouse has a funny voice.
Therefore, Mickey Mouse is a cartoon character.
Yes
No
Is the following argument sound?
All animals live on Mars.
All humans are animals.
Therefore, all humans live on Mars
Yes
No
Is the following argument valid?
All animals live on Mars.
All humans are animals.
Therefore, all humans live on Mars
Yes
No
A statement...
is a sentence with a truth value.
is always a premise in an argument.
has at least six words
can be called 'valid' in philosophy.
A premise must... (click all that apply)
always be true.
be a statement.
have a truth value.
give evidence for the conclusion.
In philosophy, a conclusion is...
what an argument is trying to show the truth of.
the last part of an argument.
the end of a discussion.
a claim that is always explicit.
P1 All cats are felines
P2 Lions are felines
C So Lions are cats
Tick what applies to this above argument
valid
invalid
sound
unsound
P1 All vertebrates have a back bone
P2 Birds are vertebrates
C Birds have a back bone
Tick what applies to this above argument
valid
invalid
sound
unsound
P1 All fish have fins
P2 Trout are fish
C Trout have fins
Tick what applies to this above argument
valid
invalid
sound
unsound
P1 All mammals are land creatures
P2 Lions are mammals
C Lions are land creatures
Tick what applies to this above argument
valid
invalid
sound
unsound
P1 All planets are perfectly round
P2 Earth is a planet
C Earth is perfectly round
Tick what applies to this above argument
valid
invalid
sound
unsound
P1 All planets are perfectly round
P2 Earth is perfectly round
C Earth is a planet
Tick what applies to this above argument
valid
invalid
sound
unsound
