Independent and Dependent Variables, Hypotheses

A statement that makes a prediction which can be tested by an experiment

• Control

• Independent Variable

• Dependent Variable

• Hypothesis

Tags

NGSS.MS-LS2-2

The measured effect of changing a condition in an experiment

• Dependent Variable

• Independent Variable

• Hypothesis

• Control

Tags

NGSS.MS-LS1-5

The condition that the researcher chooses to change; the cause of some effect in an experiment

• constant

• control

• independent variable

• dependent variable

Which one below is a hypothesis?

• As the amount of water increased, the height of the plant increased.

• Will the height of a plant increase if it receives more water?

• If the amount of water increases, then the height of a plant will increase.

• I wonder what will happen if I change the amount of water I use with my plants?

Tags

NGSS.MS-LS1-5

Based on this hypothesis, "If the amount of water increases, then the plant will grow taller," what is the independent variable?

• water

• amount of water

• temperature of water

• taller plants

Based on this hypothesis, "If the amount of water increases, then the plant will grow taller," what is the dependent variable?

• amount of water

• amount of sunlight

• temperature of water

• height of plant

A student writes the following hypothesis:

If the height a ball is dropped from increases, then the height the ball bounces also increases.

What is the independent variable?

• Type of ball

• Height a ball is dropped from

• Height the ball bounces

• Surface the ball bounces on

A student writes the following hypothesis:

If the height a ball is dropped from increases, then the height the ball bounces also increases.

What is the dependent variable?

• Type of ball

• Height a ball is dropped from

• Height the ball bounces

• Surface the ball bounces on

A student writes the following hypothesis:

If the height a ball is dropped from increases, then the height the ball bounces also increases.

What are two conditions you would need to keep constant (the same) each trial?

• Type of ball

• Height a ball is dropped from

• Height the ball bounces

• Surface the ball bounces on

Tags

NGSS.MS-ETS1-1

A student wonders how the temperature of tea will affect the speed that sugar dissolves. Which hypothesis addresses what the student wonders about?

• If there is more tea in the cup, then the sugar will dissolve faster

• If I stir the tea faster, then the sugar will dissolve faster

• If the tea is brewed to be stronger, then the sugar will dissolve more slowly

• If the temperature of the tea is warmer, then the sugar will dissolve faster

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4