Experimental Design Review

Which of these is a QuaLitative observation?

• The flower is red.

• The bowling ball weighs 8 pounds.

• The boy is 6 years old.

• The flower is 8 inches tall.

Which of these is a QuaLitative observation

• The ball is round.

• The dog is black.

• The grass is green.

• All of the above.

Which of these is a QuaNtitative observation?

• There are boys and girls in the classroom.

• There are 7 basketballs in the gym.

• We have a lot of teachers at GMS.

• The sky is blue.

Which of these is a QuanTitative observation?

• The lemons are yellow.

• There are 5 green limes.

• The car is black.

• The grass is green.

In this experiment, identify the independent variable.

How do sugary drinks affect teeth?

• The amount of sugar in drinks

• The color of the drink

• The size of teeth

• The number of teeth

In this experiment, identify the dependent variable.

Does caffeine have an affect on how fast someone can type?

• Amount of caffeine

• Amount of letters typed

• Amount of time spent typing

• Speed of typing

In this experiment, identify 2 constants.

Does the surface you bounce a basketball on affect the height the ball bounces?

• The height of the bounce

• The size of ball

• The type of floor

• The person bouncing the ball

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

The type of variable that you change or manipulate in an experiment.  It is what you are testing.

• Independent
• Dependent
• Control

The parts of the experiment that must be kept the same.

• Constants
• independent
• Dependent

Tags

NGSS.MS-PS2-2

If I water the plant more often, then it will grow taller.  Name the dependent variable.

• The amount of water.
• The amount of soil.
• The height of the plant.
• The amount of water.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1