experimental design

How many things can a scientist change in an experiment?

• 0

• 1

• 2

• as many as they want

The things you need to keep the SAME in experiment are called

• controls

• constants

• variables

• graphs

The thing that a scientist MEASURES in an experiment is the ____

• independent variable

• dependent variable

• constants

• controls

The 1 thing a scientist manipulates (changes) is the _____

• dependent variable

• independent variable

• control

• constant

The group that does not receive "experimental treatment" is the

• constant

• control

• independent variable

• dependent variable

What is the relationship between the independent and dependent variable ?

• Changing the independent variable affects the dependent variable

• changing the dependent variable affects the independent variable

• they have no relationship

Tags

NGSS.HS-PS2-1

How do scientists ensure they have quality data?

• they do the experiment multiple times

• they only do the experiment once

• they never share results

• they

Tags

NGSS.MS-PS1-2

Mr. Gaither wanted to know if the temperature in his classroom had an affect on how sleepy his students are. So, he slowly increased the temperature of the room and recorded when students would put their heads down to sleep.

In this experiment, the independent variable is.....

• temperature

• sleepy students

• there is no independent variable

• there is no way to tell

Tags

NGSS.MS-PS3-4

Mr. Gaither wanted to know if the temperature in his classroom had an affect on how sleepy his students are. So, he slowly increased the temperature of the room and recorded when students would put their heads down to sleep.

In this experiment, the DEPENDENT variable is....

• temperature

• the number of sleepy students

• there is no dependent variable

• there is no way to tell

Choose the correct formula to calculate an object's speed

• Speed = distance X time

• Speed = distance / time

• Speed = Distance + time

• Speed = Distance - time

Tags

NGSS.MS-PS3-1