Bella and Alex are conducting a science experiment. Which of the following questions can be tested through their controlled experiment?

• How do airplanes fly?

• How does changing the shape of an airplane's wings affect its speed?

• Why do birds fly south for the winter?

• What is the fastest way to travel from New York to London?

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Ana and James want to test which fertilizer helps tomato plants grow the tallest. What is their independent variable?

• The amount of water the plants get

• The type of fertilizer used

• The height of the plants

• The number of days you observe the plants

John and Sloane are conducting a science project. Which of these questions could be answered by their experiment?

• How do dogs learn to sit?

• Does the amount of sunlight affect how quickly tomatoes ripen?

• What is the best breed of dog?

• Why do cats prefer sleeping during the day?

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Taryn and Luke are experimenting to find out how temperature affects ice cream melting. What would be their dependent variable?

• The flavor of ice cream

• The temperature of the surroundings

• How fast the ice cream melts

• The brand of ice cream

Tags

NGSS.MS-PS3-4

Does changing the amount of salt in water affect its boiling point? Braxton and Madeline are conducting an experiment to find out.

• • Independent Variable: Amount of salt

  • Dependent Variable: Boiling point of water

  • Constant: Type of salt

• • Independent Variable: Boiling point of water

  • Dependent Variable: Amount of salt

  • Constant: Amount of water

• • Independent Variable: Amount of water

  • Dependent Variable: Amount of salt

  • Constant: Boiling point of water

• • Independent Variable: Type of salt

  • Dependent Variable: Temperature of the room

  • Constant: Boiling point of water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Graham is testing which toothpaste removes plaque best. What is his dependent variable?

• The amount of toothpaste he uses

• The type of toothpaste

• How much plaque is removed

• The type of toothbrush

French is testing if playing different types of music affects basketball players' performance. What should remain constant in his experiment?

• The type of music

• The number of baskets scored

• The time given for shooting baskets

• The number of players

Leighton is baking a cake for her friend's birthday. Which of the following cold be a testable question she could use for her experiment?

• Is Pepsi tastier than Coke?

• How does changing the amount of sugar in a recipe affect the texture of a cake?

• Why do people prefer spicy foods?

• What is the best type of chocolate?

Coco is testing how adding weight to a paper airplane affects the distance it flies. What is the independent variable?

• The type of paper used

• The amount of weight added to the airplane

• The distance the airplane flies

• The number of paper clips added

Tags

NGSS.MS-PS2-2

Scarlett is wondering which question can be answered by collecting data?

• How much water makes a plant grow the fastest?

• Why do children love ice cream?

• What is the most popular color for a new car?

Tags

NGSS.MS-LS1-5