How much salt is in the ocean?

What is your name?

Use the bar graph above to figure out if it’s a good idea for Pedro to put this aquarium on the shelf in his room. How much would the aquarium weigh with all the water, salt, and everything else added?

Pedro can build the saltwater aquarium as planned. The weight of the aquarium won’t break the shelf.

• True
• False

Pedro could include fewer fish, plants, or rocks in the tank. This would lower the overall weight of the aquarium.

• True
• False

Pedro could keep the same number of fish, plants, and rocks in the tank. But he could decide to have a freshwater aquarium (instead of a saltwater aquarium).

• True
• False

Look at the weights shown below each ingredient in the bar graphs. How much would the regular lemonade weigh?

How much would the low sugar lemonade weigh?

Once the sugar dissolves in the lemon juice, it completely vanishes. The sugar doesn’t add weight to the lemonade. Mai can put the same number of bottles of regular lemonade and low-sugar lemonade in each truck because the weight is the same.

• True
• False

Once the sugar dissolves in the lemon juice, it looks like it vanishes, but it is actually still there. The sugar adds weight to the lemonade. So Mai will have to put fewer bottles of regular lemonade in a truck than low-sugar lemonade because the regular lemonade weighs more.

• True
• False

Once the sugar dissolves in the lemon juice, it looks like it vanishes, but it is actually still there. You can tell the sugar is still there because the lemonade tastes sweet. But the weight of the lemonade will NOT change based on the amount of sugar you add to the lemon juice.

• True
• False