Week 3 quiz review

A scientist wants to find out how different amounts of sunlight affect the growth of a plant.

What is the dependent variable in this case?

• The temperature of the environment
• The type of plant
• The amount of sunlight
• The growth of the plant

Tags

NGSS.MS-LS1-5

Caelyn wanted to find out what shampoo made her hair the shiniest.  Everyday she washed her hair with different shampoos and then rated how shiny her hair was, on a scale from 1-10. She washed her hair with  Pantene, Herbal Essences, L’Oreal, and on the 4th day just water.

What is the independent variable in this experiment? 

• The amount of water used
• The time of day she washed her hair
• The temperature of the water
• Type of shampoo used

Trevor wanted to find out what fertilizer worked best for growing roses.  He put Miracle Grow on rose one, Scotts fertilizer on rose two, and no fertilizer on the third. The recorded the height of the roses every week for two months. 

 Using the scenario above identify and match the following: 

Dependent Variable, Independent Variable

• Independent Variable: Watering schedule; Dependent Variable: Height of the roses.
• Independent Variable: Soil type; Dependent Variable: Color of the roses.
• Independent Variable: Height of the roses; Dependent Variable: Type of fertilizer.
• Independent Variable: Type of fertilizer; Dependent Variable: Height of the roses.

Tags

NGSS.MS-LS2-1

Imagine you are a scientist studying how different types of soil affect the growth of tomato plants. You want to know whether adding compost to the soil will make the plants grow taller.

Which of the following is a correct hypothesis ?

• Adding sand to the soil will make tomato plants grow taller.
• Tomato plants will grow taller without any soil amendments.
• Adding water to the soil will stunt the growth of tomato plants.
• If tomato plants grow in soil with compost then they will grow taller than those grown in regular soil because of the ingredient of the soil

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A researcher is studying how the amount of time spent studying impacts test scores among students.

what is the dependent variable?

• test scores
• student motivation
• study time
• test difficulty

Alex wanted to find out what toothpaste made teeth the cleanest.  Everyday she brushed her teeth with a different product and then took a plaque test to see how much plaque was left. She used Crest, Colgate, Close-up, and water.

Dependent, independent, hypothesis

• The type of toothpaste is the dependent variable.
• Crest, Colgate, Close-up, and water are the independent variables; the amount of plaque left is the dependent variable.
• The plaque test is the independent variable.
• The amount of toothpaste used is the independent variable.

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-PS1-2

A researcher is investigating how different types of music affect the concentration levels of students while studying.

What is the independent variable in this study?

• The type of music

• The concentration levels

• The duration of study sessions

• The age of the students

Maria wants to determine if the amount of sleep affects her performance in daily tasks. She records the number of hours she sleeps each night and rates her performance the next day.

What is the dependent variable in this experiment?

• The number of hours of sleep

• The type of tasks performed

• The performance rating

• The time of day she performs the tasks

A teacher is testing whether different teaching methods impact student engagement in the classroom. She uses lectures, group activities, and interactive simulations over different weeks and measures student engagement through surveys.

What is the independent variable in this scenario?

• The type of teaching method

• The student engagement levels

• The duration of each class

• The number of students in the class

Tags

NGSS.MS-PS3-1

A scientist is studying the effect of different water temperatures on the hatching rate of fish eggs.

What is the dependent variable in this study?

• The type of fish

• The water temperature

• The hatching rate of fish eggs

• The size of the fish eggs

Tags

NGSS.HS-LS4-5