WorksheetsLogic- ALL
Total questions: 28
Worksheet time: 14mins
What is logic?
Logic is all thinking.
Logic is critical thinking that uses strict rules of validity.
Logic is knowing who is correct.
Logic is advanced thinking that makes the logician infallible.
What is a premise?
A branch on a tree.
A true fact.
A bad reason.
An idea or fact that supports other ideas or facts.
What is an argument? (in logic)
A formal structure where one or more premises lead to a conclusion.
Making people feel like you are right.
Proving that you are right.
A shouting match with your parents.
What is a conclusion (in logic)
The end of your story.
What you use to make your point.
An idea or fact that is supported by other idea(s) and/or fact(s).
The end.
What does valid mean (in logic?)
When the premises are true.
When the conclusion is true.
When the conclusion must be true if the premises are true.
It has nothing to do with being true.
What is the definition of a Straw Man argument?
When people try to scare you, like farmers use scare crows.
When someone says you are wrong, by talking about something else altogether!
When the person saying the argument is attacked, instead of the actual argument
When an argument is false.
What is an example of a 'Making it Personal' fallacy.
Person 1: Green apples are the best!
Person 2: You are stupid!
Therefore, Green apples are not the best.
Person 1: Green apples are the best!
Person 2: Green is the color of puke.
Person 2: Green apples are puke colored
Therefore, Green apples are not the best.
Person 1: Green apples are ugly.
Person 2: Your apple is green.
Therefore, Your apple is ugly.
What dose invalid mean?
Not true. (the argument is false)
Not valid. (the premises can be true, and the conclusion can still be false)
If something is true, then it must be valid.
True
False
If something is valid, then it must be true.
True
False
Is this argument valid or invalid? Why?
If I go outside in the snow, then I will be cold.
I am cold.
Therefore, I went outside in the snow.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Premise 1: If I go outside in the snow, then I will be cold.
Premise 2: I went outside in the snow.
Conclusion: Therefore, I am cold.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Premise 1: If I am climbing a mountain, then I will not be in bed.
Premise 2:I am in bed.
Conclusion: Therefore, I am not climbing a mountain.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Premise 1: If I eat green eggs and ham, Sam will be happy.
Premise 2: If Sam is happy, he will make more green eggs and ham.
Conclusion: Therefore, If I eat green eggs and ham, Sam will make more green eggs and ham.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Premise 1: Either I will fly, or I will fall.
Premise 2: If I fly, then I will have a lot of fun.
Premise 3: If I fall, then I will get hurt.
Conclusion: Therefore, I will either have a lot of fun, or I will get hurt.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Either I will eat spinach, or I will not eat spinach.
Premise 1: If I eat spinach, then I will be big and strong.
Premise 2: If I do not eat spinach, I will be malnourished.
Conclusion: Therefore, I will either be big and strong, or I will eat spinach.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Premise 1: If I am climbing a mountain, then I will not be in bed.
Premise 2: I am not in bed.
Conclusion: Therefore, I am not climbing a mountain.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Premise 1: If I eat green eggs and ham, Sam will be happy.
Premise 2: If I eat green eggs and ham, Sam will tap dance.
Conclusion: Therefore, If I eat green eggs and ham, Sam will make more green eggs and ham.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Premise 1: If I am slow, then I will win the race.
Premise 2: I am slow.
Conclusion: Therefore, I will win the race.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid? Why?
Premise 1: If I am asleep, then I am awake.
Premise 2: I am not awake.
Conclusion: Therefore, I am not asleep.
Invalid
Valid- Modus Ponens
Valid- Modus Tollens
Valid- Hypothetical Syllogism
Valid- Constructive Dilemma
Is this argument valid or invalid (if invalid, what fallacy is it using)?
Premise 1: Joe is a fish.
Premise 2: All fish knows how to swim.
Conclusion: Joe knows how to swim.
valid
invalid (straw man)
invalid (making it personal)
invalid (false dilemma)
Is this argument valid or invalid (if invalid, what fallacy is it using)?
Premise 1: Joe is a fish.
Premise 2: All fish know how to swim.
Premise 3: Joe likes to eat chips.
Conclusion: Joe knows how to swim.
valid
invalid (straw man)
invalid (making it personal)
invalid (gamblers fallacy)
Is this argument valid or invalid (if invalid, what fallacy is it using)?
Premise 1: Joe is a fish.
Premise 2: Joe likes to eat chips.
Conclusion: Joe thinks chips are the best food.
valid
invalid (straw man)
invalid (making it personal)
invalid (gamblers fallacy)
Is this argument valid or invalid(if invalid, what fallacy is it using)?
Premise 1: Homework is fun.
Premise 2: Homework is fun if you like to do work all of the time.
Premise 3: It is lame to do work all of the time.
Conclusion: Homework isn't fun.
valid
invalid (straw man)
invalid (making it personal)
invalid (false dilemma)
Is this argument valid or invalid (if invalid, what fallacy is it using)?
Premise 1: Homework is fun.
Premise 2: I do homework every day.
Premise 3: I have fun when I do homework
Conclusion: I have fun every day.
valid
invalid (straw man)
invalid (making it personal)
invalid (false dilemma)
Is this argument valid or invalid (if invalid, what fallacy is it using)?
Premise 1: Mrs. McKovac thinks that homework is fun.
Premise 2: Mrs. McKovac is stupid.
Conclusion: Therefore, Homework is stupid.
valid
invalid (straw man)
invalid (making it personal)
invalid (other)
Is this argument valid or invalid (if invalid, what fallacy is it using)?
Premise 1: Either we will go to war, or we will appear weak.
Conclusion: We must go to war
Valid
Invalid (straw man)
Invalid (false dilemma)
Invalid (gambler's fallacy)
Is this argument valid or invalid (if invalid, what fallacy is it using)?
Premise 1: The penny just landed heads up 3 times in a row.
Conclusion: The penny must land tails side up next.
Valid
Invalid (straw man)
Invalid (false dilemma)
Invalid (gambler's fallacy)
