Curated OER
Changing Planet: Ocean Acidification - the Chemistry is Less than Basic!
A video and laboratory investigation are highlights to this lesson on acidification of ocean water due to increased atmospheric carbon dioxide. Using bromothymol blue (BTB) as an indicator, pupils analyze the amount of carbon dioxide...
Curated OER
How to Float an Egg
Use the scientific method to experiment with an egg. Your class can examine buoyancy and density by finding how many spoons of salt are needed to float an egg. They can predict, experiment, record data, and analyze results.
University of Waikato
Buoyancy in Water
Change where an object floats in water. Pupils experiment with a Cartesian diver by squeezing on the side of a plastic bottle. Learners pay attention to the bulb of the pipette as the bottle is squeezed to determine what is happening...
Curated OER
Density and Mass
Learners experiment to find which liquids are more dense. In this density and mass lesson, students predict and then test objects to observe and measure their density. learners observe which items sink and float. Students complete...
Curated OER
Sink or Float
Students explore water properties by conducting a class experiment. In this buoyancy instructional activity, students make predictions as to whether or not specific objects will sink or float in water. Students conduct the experiment and...
Curated OER
What Floats Your Boat?
This open-ended boat building exercise is meant to be part of a three-lesson series on ships. Links to the other two lessons are included. This particular part is mostly a group lab activity in which they build a boat, find its load line...
American Chemical Society
Changing the Density of a Liquid - Heating and Cooling
During a unit on density, pupils ponder whether or not temperature affects this property. By carefully inserting blue cold water and yellow hot water into a room-temperature sample, they will see the answer. Make sure to have done the...
Curated OER
Floating and Sinking
In this early physics worksheet, students cut out pictures of 16 everyday objects. Students determine whether each of the objects will float or sink and then paste the pictures in the appropriate boxes.
Curated OER
Sink or Float
Students experiment with different objects to test if they sink or float. They predict what the object will do before it is put into the water. They are allowed to play with the items after the experiment is over.
DiscoverE
Water Sampling
What is the best way to test water quality? Using plastic bottles, scholars create monitoring sensors to test water quality. Creating three different sensors allows individuals to measure water quality at different water levels.
Teach Engineering
Rock and Boat
Present the class with a question on whether the water level of a pond will rise they take a large rock out of a boat and drop it into the pond. Groups come down on all sides of the question and try to justify their answers. The activity...
Curated OER
Does Soap Float?
Students form hypotheses and carry out an investigation in order to answer a central question: Does soap float? The focus of this instructional activity is on scientific inquiry, but it incorporates scientific topics such as sinking and...
Curated OER
Will it Float?
First graders discuss why some things sink and some float after dropping a variety of items into water.
Curated OER
Water Exploration Station
Students explore the characteristics of water. In this water exploration lesson, students participate in various learning centers to inquire how water drains and how to increase the flow of water. Students use estimation and measurement...
Curated OER
What's The Matter: A Sinker or Floater?
Young scholars conduct an experiment. In this water lesson, students watch the lesson "Float and Sink" on an interactive website. Young scholars learn how to test items in water and then work in groups to test their items. Students...
Curated OER
Sink or Float
Students construct clay boats and predict whether the boats will sink or float. Students will hypothesize what caused the boats to sink or float.
Curated OER
Leaky Seal
Junior high schoolers explore possible theories for the cause of the Hunley submarine sinking. Through hands on activities, they investigate how to create a waterproof seal. Afterwards, they discuss how seals work and various...
Curated OER
Heavy Ice: Day Five
Students explore physics by conducting a class experiment. For this density lesson, students examine a list of items and discuss whether they will sink or float and then determine their density. Students examine the objects over five...
Curated OER
The Role of Density in Sinking or Floating: Relational Causality
Students consider density and how it affects sinking and floating. Students make predictions, test liquids, and observe why some liquids sink and others float. They perform experiments to determine relational causality and how liquids...
Curated OER
What Floats Your Boat?
Students are introduced to the concept of buoyancy. The Video used in this lesson demonstrates and explains the characteristics of objects that sink and float. It presents the concepts of displacement, weight, and buoyancy.
Cornell University
Buoyancy
Swimmers know to float by turning their bodies horizontally rather than vertically, but why does that make a difference? In an interesting lesson, scholars explore buoyancy and the properties of air and water. They test cups to see which...
American Chemical Society
Temperature Affects Density
Different substances can have different densities, but can the same substance have different densities? Lesson explores the effect of temperature on the density of water. Extension idea connects the concept of how melting ice in lakes...
Curated OER
Investigating the Effect of Salinity on the Density and Stability of Water
Water with varying amounts of dissolved salt are dyed and then used to compare densities. The objective is to discover the effect of salinity, and therefore density, on ocean water on the stability of the ocean. Many branches of science...
Curated OER
Float and Sink
In this float or sink worksheet, 8th graders solve 1 science/math puzzle about displacement of water; the answer is available online.