Variables and Replication and Repetition Review

Sophia, Maya, and Oliver are young scientists. They are investigating different fuel sources for cars of the future. Each of them conducts three trials and records their data. What is this an example of?

• Repetition

• Replication

• Summarizing

• Conclusions

Tags

NGSS.MS-ETS1-3

Charlotte is a huge fan of bubble gum and is convinced that bubblicious makes the biggest bubbles! She runs a fun experiment with different gum brands, blowing 5 bubbles each and jotting down her results. But uh-oh—her data doesn’t back up her theory! So, she asks her friend Jackson to follow her exact steps and see if he gets the same results. What is this an example of?

• Repetition

• Replication

• Summarizing

• Conclusion

Henry, Benjamin, and David want to find out which football has the best grip for their big game. They each buy 5 different footballs and take turns catching each one 5 times. What is this an example of?

• Repetition

• Replication

• Summarizing

• Conclusion

Mia, Evelyn, and Aria are all working on the same science experiment. Why is it important for them to replicate each other's experiments?

• Replication allows for data to be collect with multiple trials

• Replication allows only one person to redo work to make sure it is valid

• Repetition allows for others to test another's work to make sure it is valid

• Replication allows for others to test another's work to make sure it is valid

For their science fair project, Priya and Scarlett are on a mission to blow the biggest bubbles ever! Priya wonders, "Some bubble recipes use glycerin, and some don’t. If we want to make the largest bubbles possible, how does adding glycerin to our bubble solution change the size of the bubbles we can blow?" What is the test variable in their experiment?

• The size of their bubble wand

• The size of the bubble blown

• The amount of glycerin added to the bubble blowing solution

• The brand of dish detergent used to make the bubble blowing solution

Anika, Daniel, and Aria are testing how different types of light affect their plants' growth for a science project. What is the outcome variable in their experiment?

• Plant Growth

• Type of Plant

• Type of Light

• Amount of Water

Tags

NGSS.MS-LS1-5

Sophia and Jackson are doing a science experiment! They want to know: What is an outcome variable?

• The variable that is changed

• The variable that is measured

• The variable that stays the same

• The variable that does not get what's being tested

Tags

NGSS.MS-PS1-2

Billy, Abigail, and Benjamin are on a quest to become pro gamers! To find the ultimate gaming gear, they each pick 3 different controllers and play with each one for 2 hours a day for 5 days. They rate each controller based on their game scores. What is the test variable in their experiment?

• Type of controller

• Score on the game

• Type of game played

• Time of day he played

Tags

NGSS.MS-PS3-1

Grace, Olivia, and Elijah decided to do a science experiment to find out how different amounts of sunlight affect plant growth. They each used the same type of plant, gave every plant the same amount of water, and used the same type of fertilizer for 10 days. After that, they measured how tall their plants grew. Which is an example of a constant variable in their experiment?

• Height of plant

• Amount of sunlight

• Same type of fertilizer

• Different amounts of water

During a science experiment, Jackson and Anika are testing the effects of sunlight on plant growth. What is the control group in their experiment?

• It is the group you measure to collect for data

• It is the group that does not get the test variable

• The one thing you change in an experiment on purpose

• It is the factors that stay the same throughout the experiment