How To Make Rainbow In A Jar
This rainbow cake in a jar looks really pretty and makes a great gift. It’s a perfect solution when you need a few small gifts since the recipe will make about four small rainbow cakes (depending on the size of the mason jars and the cake mix used). Once you have completed the rainbow cake you can print the custom labels to personalize the gift and add a more professional touch.
There are two different methods to make a rainbow cake in a mason jar. The first method is to pour the cake batter into the mason jar, layer by layer, and then bake the batter in the mason jar. The layers tend to mix and it often creates a messy finish. The advantage is that you don’t waste any cake batter and you will probably get around 3 to 4 rainbow cake mason jars.
Another method is to bake the colored cakes and then cut out circles the size of the mason jar. You then spread white frosting on each circle and carefully insert each layer into the mason jar, layer by layer, until they are all inside the jar. The disadvantage is that you will waste some cake and will probably only get around 2 to 3 rainbow cake mason jars but you can make cake pops with the leftovers. You can also just insert the leftovers into a jar and I’m sure that there will be many volunteers to eat the cake even if it doesn’t look perfect!
This method creates a perfect finish and makes your gift look spectacular!
Ingredients:
- 1 Box white cake mix and any other ingredients required according to the instructions on the box
- Ready-made / home-made white frosting
- Gel food colors (red, orange, yellow, green, blue and purple)
- Wide mouth mason jars
- Wet wipes or paper towels (to wipe the jar down if necessary)
- Disposable spoons
- White ribbons
- Rainbow sprinkles
Method:
- Wash and dry the mason jars.
- Preheat the oven to 350 degrees Fahrenheit or 180 degrees Celsius.
- Make the white cake batter according to the directions on the box.
- Divide the batter into six portions (you can make more or less colors if you prefer).
- Add a different food color to each portion. Since food color is often very concentrated add a few drops and mix and then only add more if necessary. It is easy to add more but problematic if you add too much.
To bake the rainbow cake in the Mason jar:
- If you are going to bake the rainbow cakes in the mason jars then spoon about a quarter of the red batter into the first jar. Then add the orange batter, then the yellow, then the green, then the blue and then the purple.
- If the batter drips on the jar then wipe it clean before moving on to the next layer.
- Repeat these steps until you have finished all of the batter.
- Fill the bottom of a glass baking dish with about a half inch of water. This will prevent the cake from browning. Carefully place the mason jars in the baking dish.
- Bake for about half an hour or a little longer if necessary (until a toothpick comes out clean). It is important that the cake is ready yet not browned as it won’t look as good.
To bake the rainbow cake before inserting in the mason jar:
- Pour each portion of batter into a small baking dish.
- Bake until a toothpick comes out clean (go according to the cake instructions but check it early since you are only baking part of the cake box and it should be ready sooner).
- Allow to cool.
- Cut out circles the size of the mason jar’s opening. If you do not have a round cookie cutter then use the jar to cut the cake into circles. You can also use a glass cup if you have one the same size.
- Spread each circle with white frosting and then gently insert into the mason jar. Start with the red cake, then add the orange cake, then the yellow, then the green, then the blue and then the purple.
For both methods continue from here:
- Add frosting.
- Decorate with colored sprinkles.
- Connect a spoon to each mason jar and tie with a ribbon or string.
- Make a heart shaped chalkboard custom label and adhere with paper glue (unless you print on sticker paper)
Water science is awesome! This water density experiment with sugar uses only a few kitchen ingredients but produces an amazing science experiment for kids! Water experiments for kids make great play activities as well as learning too! Enjoy finding out about the basics of color mixing all the way up to the density of liquids with this one simple water density experiment.
RAINBOW IN A JAR WATER DENSITY EXPERIMENT!
We love science, but even more, we love science experiments that can be done with inexpensive supplies straight out of our kitchen cupboards. Our science activities for preschoolers are perfect for families, teachers, and everyone on a budget. Provide awesome science activities for young kids without the expense!
WHY IS SCIENCE FOR KIDS IMPORTANT?
Kids are curious and always looking to explore, discover, check out, and experiment to find out why things do what they do, move as they move, or change as they change!
Science learning surrounds us, inside and out. Kids love checking things out with magnifying glasses, creating chemical reactions with kitchen ingredients, and of course exploring stored energy!
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There are lots of easy science concepts that you can introduce kids to very early on! You might not even think about science when your toddler pushes a card down a ramp, plays in front of the mirror, laughs at your shadow puppets, or bounces balls over and over again. See where I am going with this list! What else can you add if you stop to think about it?
Science learning starts early, and you can be a part of that with simple science experiments with everyday materials.
This easy science activity also makes a cool St Patrick’s Day Rainbow!
HOW TO MAKE A RAINBOW IN A JAR
SUPPLIES NEEDED:
- 4 Glasses or cups
- warm water and 1 cup measuring cup
- sugar and measuring teaspoon
- food coloring
- spoon and baster
- test tubes
INSTRUCTIONS:
STEP 1: Set out 6 glasses. Measure 1 cup of water into each glass. This is a great time to explain the importance of all the glasses having the same amount of water! You can read more about the scientific method for kids.
STEP 2: Add a few drops of food coloring to each glass of water. You could have your child mix the colors or help them with mixing the colors!
Note: From experience we have found 4 colors is the easiest to work with!
STEP 3. Measure and add a different amount of sugar to each glass of colored water. We have since cut our experiment down to just 4 colors but you can experiment with all of them.
- RED COLOR – 2 TBSP
- YELLOW COLOR – 4 TBSP
- GREEN COLOR – 6 TBSP
- BLUE COLOR – 8 TBSP
STEP 4. Stir until as much of the sugar is dissolved as possible.
You can also make a crystal rainbow that is a great activity for all ages!
STEP 5. Time to use your baster or pipette to create a colorful rainbow in a jar.
Tip: Have your child try two colors for an easier version!
- Squeeze the baster and put it in the red water. Release a little of the pressure to suck up some red water.
- Keeping it squeezed, transfer to orange, release a little more to suck up some orange water.
- Continue to do this for all the colors. Make sure you leave enough pressure in the baster to get you through all six colors.
My husband perfected the method! We love using basters for many of our science activities.
WHAT IS WATER DENSITY?
Density is all about compactness of stuff in space. For this experiment, the more sugar in each glass of water, the greater the density of the water. Same space, more stuff in it! The denser the substance, the more likely it will sink. This is how our rainbow sugar water density tower works!
By increasing the amount of sugar in the solution but keeping the amount of water constant, you create solutions that have increasing densities. The more sugar you mix into the same amount of water, the higher the density of the mixture. So density explains why the colored sugar solutions stack on top of each other inside the baster.
You could vary this water density experiment by looking at the density of different concentrations of salt dissolved in water!
Looking for easy to print activities, and inexpensive science experiments?
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CREATE A RAINBOW WATER DENSITY TOWER
NOTE: This is probably a better experiment for elementary school or with a very patient kid. My son enjoyed trying to make the tower as well as simply experimenting with mixing colors.
This rainbow sugar water density tower does take a slow hand and patience. You could also try a density tower with a variety of liquids or even ahomemade lava lamp to learn more about density.
We used a test tube from our favorite science kit! This time we found starting with the densest water {purple} worked the best.
STEP 1: Use the baster’s measuring marks to ensure you get the same amount of each color. Add the purple to the tube.
STEP 2: Next, add the blue, but add the blue very, very slowly. You may want to release the water slowly along the side of the jar or glass.
STEP 3: Continue to do the same thing, working your way back through the colors. Slow and steady. We practiced a few times before we got a full rainbow.
You can experiment with your own methods and challenge your kids to come up with their own plan of action to make a rainbow in a jar.
We kept our artificial rainbow around for a couple days It’s so pretty in the light!
Awesome science experiment for kids you can try today! Pull out sugar, water, and food coloring and get started experimenting!
RAINBOW IN A GLASS: WATER DENSITY FOR KIDS!
CHECK OUT MORE RAINBOW ACTIVITIES:
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