evaluate hypotheses

What is the proper hypothesis for the problem:
"Will shamrock plants grow better than spider plants?"

• If shamrock plants are planted, then they will grow better than spider plants.

• If plants are grown, then shamrocks will grow taller than spider plants.

• If measured, the shamrocks will win.

• This problem is not testable

Ralph is concerned about the number of ants in his kitchen. He wonders if cleaning the kitchen once a day instead of once a month would fix the problem.

What is the independent variable?

• How often the kitchen is cleaned.

• The number of ants in the kitchen.

• Ralph's concern.

• Cleaning the kitchen.

Sunny is concerned about the number of ants in their kitchen. They wonder if cleaning the kitchen more than once a month would fix the problem.

What is the responding variable?

• How often the kitchen is cleaned.

• The amount of ants in the kitchen.

• Ralph's concern.

• Cleaning the kitchen.

Donte is concerned about the number of ants in his kitchen. He wonders if cleaning the kitchen more than once a month would fix the problem.

What will the results be compared with to determine if his hypothesis is supported?

• Cleaning the kitchen versus not cleaning the kitchen.

• The amount of ants in the field before a rainstorm versus after a rainstorm.

• The amount of ants in the kitchen before it was cleaned more often, compared to the amount of ants after the kitchen is cleaned more often.

• How clean the ants are before the kitchen is cleaned versus how clean the ants are after the kitchen is cleaned.

Which hypothesis is properly written for:
Independent Variable: Type of Fish Food
Dependent Variable: Food that is eaten the fastest

• If guppies are fed bloodworms or freeze-dried shrimp, then the bloodworms will win.

• If guppies are fed bloodworms or freeze-dried shrimp, then the guppies will eat the bloodworms the fastest.

• If guppies are fed bloodworms or freeze-dried shrimp, then the guppies will eat more bloodworms than shrimp.

• If guppies are fed bloodworms or freeze-dried shrimp, then I think the guppies will eat bloodworms the fastest.

Is this a proper hypothesis?
"If mentos is placed into diet coke, then the soda will explode higher than when mentos is placed into regular coke."

• It is a proper hypothesis

• It is not a proper hypothesis

Which hypothesis is correct?

Problem: "Does Raid bug spray prevent spiders from coming in the house more than Hot Shot bug spray?"

• If a house is sprayed with Raid bug spray then no spiders will enter the house.

• If a house is sprayed with Raid bug spray, then less bugs will enter the house than when Hot Shot is used to spray the house.

• If a house is sprayed with Raid bug spray, then less spiders will enter the house than when Hot Shot is used to spray the house.

• This problem is not a scientific question.

Hypotheses are:

• Observations

• Inferences

• Predictions

Which hypothesis is correct?
Independent Variable: Type of bee
Dependent Variable: How many bees visit a sunflower

• If sunflowers are planted, then bumblebees will visit more often than honeybees.

• If sunflowers are planted, then they will come more often than honeybees.

• If sunflowers are planted, then I think bumblebees will win.

• If sunflowers are planted, then bumblebees will visit them more often than other flowers.

Does the brand of bubble gum affect the bubble size? Which hypothesis is INCORRECT?

• If the subject chews Bubblelicious, then the subject will blow the biggest bubble.

• If the subject chews Big Red, then the subject will blow the smallest bubble.

• If I chew Juicy Fruit, I will blow the largest bubble.

• If the subject chews Hubba Bubba, then the subject will blow the smallest bubble.

Tags

NGSS.HS-PS1-3