WARM-UP (Be sure to follow proper entry procedures and write in complete sentences!) 1.What’s heavier: a one-thousand pound sack of bricks or a one-thousand pound sack of feathers? 2.Explain what would happen to a feather if you throw it into the ocean. 3.Explain what would happen to a brick if you throw it into the ocean. 4.Why do a feather and a brick act differently when placed in water?

AGENDA 1.Warm-Up (10) 2.YET 3.TET 4.Objective (5) 5.Big Goal: Explained (5) 6.Two Announcements (2) 7.Soda Demo: Coke vs. Diet Coke (10) 8.Density Boxes (5) 9.Density Notes (5) 10.Density Lab (30) 11.Exit Ticket (5)

1)Name 1 observation from the picture to the right. 2)Name 1 inference from the picture to the right. 3)Why is science always “on- going” 4)What are the non-negotiables in this class? Thursday’s ET

TET 1.What is the formula for density? 2.An object has a mass of 5 g and a volume of 100 mL. What is the object’s density? 3.A scientist has two liquids, number 1 and 2. The density of liquid 1 is 0.85 g/mL and the density of liquid 2 is 1.2 g/mL. Describe or draw a picture to show what would happen if liquid 2 was poured into a container with liquid 1.

Daily Goals: SWBAT state the formula of density SWBAT manipulate the density formula to calculate for missing values during a class-wide lab activity Key Term: Density Big Goal All students will achieve 85% mastery of 100% of the Earth & Environmental Science objectives Students will become well-rounded and active members of the community Students will become excellent and effective communicators Students will acquire the traits necessary to excel academically in a collegiate environment

COKE VS. DIET COKE TIME FOR A DEMO!

DEMO Diet Coke vs. Regular Coke Will it sink or will it float? Will it sink or will it float FIRST: Create a hypothesis about what will happen when coke and diet coke are dropped into a beaker of water.  Put this at the top of your blank notes sheet

DENSITY Density = mass divided by volume The amount of mass in a certain amount of space Unit = g/mL

Less dense objects will float and more dense objects will sink. Water has a density of 1 g/mL A density greater than 1/gml will sink in water A density less than 1 g/mL will float in water COLLEGE CHALLENGE QUESTION: Which layer of liquid to the right as the greatest density?

FAST FACT On average, elephants sleep for about 2 hours per day.

DENSITY BOXES

WHICH BLOCK HAS A GREATER DENSITY?

Let’s try an example Sally has a brand new golden dollar coin and wants to know if the material it is made of is more or less dense than water. The mass of the coin is 5g and the volume is 1ml. Will her coin sink or float?

#2 (HELP ME OUT!) Rayquan buys a new phone case for his iPhone. The phone case company advertised that the phone case will float in water in case it falls into a lake, pond, or toilet. Before Rayquan trusts the phone company, he wants to do an experiment to see if they are right. The phone case with the phone inside has a mass of 500g. If the volume of the phone case is 755ml, will the phone case float or sink if dropped in water? Explain.

#3 – do it on your own! Ralph has a new pair of sunglasses that he is taking on a boating trip. He wants to know if the sunglasses will float in case they fall into the lake. The sunglasses have a mass of 5g. When he places them in a beaker filled with 200ml of water, the water level rises to 210ml. Will his sunglasses sink or float in the fresh water lake? Explain.

Let’s think back to the Coke and Diet Coke! Why did one sink and one float? Mass of Coke:Mass of Diet Coke: Volume of Coke:Volume of Diet Coke: Density of Coke:Density of Diet Coke:

REMEMBER OUR GROUP NORMS LAB TIME!

We are going to go over the lab together! You are with your lab group There are 6 stations around the room – do not move until you are instructed to do so! We need to give everyone a chance to do the work. NO STEWARD LEFT BEHIND!

BINDER TIME! Make sure the area around you is clean Quietly return to your seats

TIME TO CLEAN UP!

EXIT TICKET TIME! Any questions before we begin? Remember, this is your time to shine!

EXIT TICKET 1.What is the formula for density? 2.An object has a mass of 5 g and a volume of 100 mL. What is the object’s density? 3.A scientist has two liquids, number 1 and 2. The density of liquid 1 is 0.85 g/mL and the density of liquid 2 is 1.2 g/mL. Describe or draw a picture to show what would happen if liquid 2 was poured into a container with liquid 1.

SOLVE THIS! Paul wants to build a floating dock so he can walk out onto the water to watch the sun set. He knows the dock will need to be supported by buoys. One sample of the buoy material has a mass of 35g and a volume of 105ml. Will the material float in fresh water?

SOLVE THIS! Jackie is making a gift for her dad. She wants to give him a model fish tank with a model fish inside it. She wants to make sure the fish floats in a gel-like substance she is using as water in her model. The density of the gel is 1.2 g/ml. When Jackie drops the model fish into a graduated cylinder, the water level rises 8 ml. The mass of the model fish is 32g. Explain how Jackie should test whether or not the fish will float in the gel. Be descriptive and thorough in your response.