Observations and Variables

Which of these is a quantitative observation about the chicks shown in the picture below?

• 
  The chicks are fluffy.

• 
  Chicks are baby chickens.

• There are three chicks.

Which of these is a qualitative observation about the pencils shown in the picture?

• 
  Each pencil is8 8.2 cm long.

• The tips of the pencils are white.

• There are five pencils.

Tags

NGSS.2-PS1-1

How are data and observations related?

• 
  Data is a written observation.

• 
  Data is only quantitative observations.

• 
  All observations are data.

True or False: Scientists ask questions to solve problems and discover how or why things happen

• True

• False

Tags

NGSS.MS-LS2-1

Match each description to the correct vocabulary word.

• control

• 
  

  the thing that is measured in an experiment

• dependent variable

• the thing that is changed in an experiment

• 
  independent variable

• 
  

  something that remains the same in an experiment

Nadine did an experiment to find out which cat food her cat liked best. She thinks that the cat will eat faster when it likes the food.

• Nadine bought four different flavors of cat food.

• Each day, she fed the cat the same amount of a different flavor of food.

• Then, she timed how long it took her cat to eat the food.

What scientific question is Nadine trying to answer?

• Which cat food is cheapest?

• 
  What time should I feed my cat?

• 
  Which food does my cat eat fastest?

Nadine did an experiment to find out which cat food her cat liked best. She thinks that the cat will eat faster when it likes the food.

• Nadine bought four different flavors of cat food.

• Each day, she fed the cat the same amount of a different flavor of food.

• Then, she timed how long it took her cat to eat the food.

What is the independent variable in this experiment?

• flavor of cat food

• what time Nadine feeds the cat

• time it takes for the cat to eat

Tags

NGSS.MS-LS2-1

Nadine did an experiment to find out which cat food her cat liked best. She thinks that the cat will eat faster when it likes the food.

• Nadine bought four different flavors of cat food.

• Each day, she fed the cat the same amount of a different flavor of food.

• Then, she timed how long it took her cat to eat the food.

What is the dependent variable in this experiment?

• flavor of cat food

• what time Nadine feeds the cat

• time it takes for the cat to eat

Tags

NGSS.MS-LS2-1

Nadine did an experiment to find out which cat food her cat liked best. She thinks that the cat will eat faster when it likes the food.

• Nadine bought four different flavors of cat food.

• Each day, she fed the cat the same amount of a different flavor of food.

• Then, she timed how long it took her cat to eat the food.

Which of these is a control in the experiment?

• flavor of cat food

• time it takes for the cate to eat

• amount of cat food

Tags

NGSS.MS-LS2-1