Controlled

These 4 carts are all pushed with a low force. Which cart will go the fastest speed?

• Orange Bottle Cart

• Red Book Cart

• Empty Cart

• Tool Box Cart

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Place the experiment variables in the correct category.

Groups:

(a) Controlled Variables

,

(b) Testing Variable

• Heat

• Lights

• Seed A

• Daily Water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Runner 1 and Runner 3 are having a race. Data for 3 runners is shown in the table. Click on positions on the track for Runner 1 and Runner 3 based on their data. (At least one runner must be at the finish line, or both, you decide)

Answer explanation

Speed = Distance / Time

Which Cart reaches 5 m/s first?

Cart 1 or Cart 2 (Click on the picture)

Click on the the correct Reasoning on the picture as well. (click on the picture)

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

A 5th Grade student did an experiment on growing seeds. The student chose 3 bags to try to grow the seeds in . Brown Paper Bag, Clear Sandwich Bag and White Grocery Bag. Which one did the best and why? (2 answers)

• Brown Paper Bag

• Clear Sandwich Bag

• White Grocery Bag

• It is translucent

• It is transparent

Tags

NGSS.MS-ETS1-2

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The light passing through this ​ (a)   lens is ​ ​ (b)   .

• Convex

• Concave

• Refracting

• Reflecting

• Absorbing

Tags

NGSS.MS-PS4-2

This part of the experiment serves as a basis of comparison; it does not get the independent variable.

• experimental group

• control group

• constants

• variables

In a scientific experiment, which part is kept unchanged to provide a comparison against the variable being tested?

• Experimental group

• Control group

• Independent variable

• Dependent variable

What is the main purpose of a control group in an experiment?

• To introduce new variables

• To serve as a standard for comparison

• To ensure the experiment is biased

• To change the outcome of the experiment

Which of the following is an example of a controlled variable in an experiment?

• Temperature kept constant

• Amount of sunlight varied

• Type of soil changed

• Watering frequency altered