Scientific Variables Remediation

Scientific Variables Review

Multiple Choice

A lack of sleep can make you gain weight. What is the dependent variable?

• amount of sleep

• your weight

Multiple Choice

A lack of sleep can make you gain weight. What is the independent variable?

• amount of sleep

• your weight

Multiple Choice

Sara wants to see if a new brand of hair dye lasts longer than the brand she currently uses. She puts the new hair dye on the left side of her head and the old brand on her right side. After 2 weeks she observes which side of her head has more gray hair showing through.

What is the independent variable?

• brand of hair dye

• number of grey hairs

• Half of her head with the old brand

Match

Chris wants to see if his basil plants grow better in full sunlight or partial sunlight. He plants 5 basil plants on the east side of his house that only receives light in the morning, and 5 more plants on the south side of his house that receives light all day. After a month Chris measures the height of each plant.

• independent variable

• dependent variable

• control

• constant

Location of basil plants

Height of plant

None

one month

• Location of basil plants

• Height of plant

• None

• one month

Match

Sara wants to see if a new brand of hair dye lasts longer than the brand she currently uses. She puts the new hair dye on the left side of her head and the old brand on her right side. After 2 weeks she observes which side of her head has more gray hair showing through.

• independent variable

• dependent variable

• control

• constant

Brand of hair dye

Number of gray hairs

Half of her head with the old brand

2 weeks

• Brand of hair dye

• Number of gray hairs

• Half of her head with the old brand

• 2 weeks

Match

Identify the variables.

• independent variable

• dependent variable

• constant

• control

music

amount of tomatoes

type of plant

no music

• music

• amount of tomatoes

• type of plant

• no music

Match

Match the following

• independent variable

• dependent variable

• control group

• experimental group

walking 10,000 steps a day

blood pressure

people who do not walk 10,000 steps/day

people walking 10,000 steps

• walking 10,000 steps a day

• blood pressure

• people who do not walk 10,000 steps/day

• people walking 10,000 steps

Match

Match the following

• independent variable

• dependent variable

• experimental group

• control group

diet (what the hamster eats)

incidence of heart disease

hamsters on taco diet

hamsters on hamster chow

• diet (what the hamster eats)

• incidence of heart disease

• hamsters on taco diet

• hamsters on hamster chow

Match

Match the following

• independent variable

• dependent variable

• experimental group

• control group

cell phone use

development of rare brain tumor

people who use cell phones 10+ yrs.

people who don’t use cell phones

• cell phone use

• development of rare brain tumor

• people who use cell phones 10+ yrs.

• people who don’t use cell phones