FAB Five, Thursday, November 19th

Mr. Johnson challenged his students to see which group could dissolve salt the fastest in 100 ml of water. The students could change any variable(s) except the volume of water used. Group 1 changed the water temperature. They used tap water at 22oC and then three other temperatures: 32, 42, and 52 oC. They did not stir the mixture and they kept the volume of the water constant, just like Mr.Johnson directed. The salt dissolved fastest in the warmest water: the times for dissolving were:​

22oC-3 minutes​

​

32oC-2.25 minutes​

​

42oC-2 minutes​

​

52oC-1 minutes​

​

Group 2 wanted to beat Group 1 and dissolve the salt faster. What advise would you give Group 2 so they could dissolve the salt in less than 1 minute while still conducting a fair test?​

• Use less salt and more water. ​

• Stir the water instead of heating it.

• Heat the water hotter than 52°C.

• Heat the water to 52°C and stir the solution as the salt is added.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Organs in the human body carry out different functions. Which human organ breaks down food into nutrients that can be used by the human body?

• bladder

• heart

• kidneys

• stomach

Students in Mrs. Edwards fifth grade class were investigating how different amounts of water affect how tall plants grow. To do this, they bought four identical bean plants and gave each a different amount of water once a week. Each plant was watered at the same time and kept in the same area of the classroom to ensure they get the same amount of light. Their results are shown below. Based on the information below, which variable was changed?

• amount of sunlight

• amount of water

• type of plant

• number of weeks

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

A student notices that frogs are all gathering at one end of the pond. What has the student just done?​

• observed ​

• experimented

• hypothesized

• collected data

Organs in the human body carry out different functions. Which human organ breaks down food into nutrients that can be used by the human body?

• bladder

• heart

• kidneys

• stomach

Based on the data in question in the picture, which statement below BEST explains the student’s results?

• The plant that received the most amount of water grew the tallest.

• The amount of water given to the plants did not have an impact on their growth.

• The plant that received 50 mL of water grew the tallest.

• The plant that didn’t receive any water didn’t grow at all.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Caroline and Bailey are partners in science lab. The two girls are working on an experiment to see how light affects plant growth.​

​

They are trying to organize their notes into two categories: Observations and Ideas. Which statement should the girls place in the Observation category?​

• Plant A and Plant B grew into pretty plants. ​

• Plant A grew more because it was closer to the window.

• Plant A grew 1 centimeter more than Plant B on Day 16.

• Plant B sprouted later probably because it was a smaller seed.

Take a look at the organ above. It is part of the

Digestive system and removes water from food.

Where in the human body would you find this organ?

• A

• B

• C

• D

Ms. Green's students are keeping a count of the frogs on the school grounds. They have counted frogs for two years! In year #2, where did the students find the MOST frogs?​

• on plants ​

• in the pond

• pond and playground

• in the school garden

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What organ is pictured?

•  Heart

• kidney

• liver

• pancreas