Sec 1 - Variables and SI units

Which of the following would be considered quantitative data?

• Color
• Smell
• 6.84 cm
• texture

Tags

NGSS.MS-PS3-1

Scientists must decide which _________ will stay constant in an experiment

• data

• hypotheses

• variables

• question

What is the independent variable in this picture?

• The container for the water

• The source of heat

• Regular water changed to salt water

Tags

NGSS.MS-PS3-4

Which of the following IS a control that should be established in this experiment?

• The type of water

• The amount of water in each container

• Which type of waster boiled the fastest

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which question best fits the experiment being conducted?

• Does salt water boil faster than fresh water?

• Which type of water freezes fastest?

• Does saltwater weigh more than fresh water?

• How does light affect the salinity of an aqueous solution?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

After you have identified your independent and dependent variables, what should you do with the other remaining variables?

• Every other variable should be controlled and kept constant

• Observe the remaining variables

• Measure every other variable that remains

• These variables should be changed

Nerline is doing an experiment to see which color of t-shirt gets the hottest when exposed to light for 30 minutes. What is the manipulated variable?

• Exposing each t-shirt to light for exactly 30 minutes

• The color of the t-shirt

• The temperature of each t-shirt

• The type of fabric each t-shirt is made out of

Tags

NGSS.MS-PS1-4

What is another term for a dependent variable?

Variable to _______

Joshua is testing how the amount you water a plant affects its growth. What would be the INDEPENDENT VARIABLE in his experiment.

• They type of pot you put the plants in.

• The amount you water each plant.

• The amount of sunlight the plants get.

• The amount the plant grows.

Tags

NGSS.MS-LS1-5

Mr. Ward wants to see how different surfaces affect how high a tennis ball can bounce. What is the independent variable?

• the different surfaces

• using the same ball

• how high they bounce

Tags

NGSS.MS-PS2-2