Solids & Liquids — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Which is the best container for carrying water?
A) a cup with holes
B) a solid cup
C) your open hands
D) a paper napkin
A solid cup has no gaps, so liquid water cannot leak out and can be carried.
2. Why do we put sand in a bucket and not in a net?
A) sand is pretty
B) sand would fall through the holes
C) sand is a liquid
D) nets are too small
Sand grains are small and slip through the holes of a net, so a solid bucket is needed.
3. Which container is best for pebbles?
A) a cupped hand
B) a jar with a lid
C) a bowl of water
D) a paper bag with holes
A jar with a lid keeps solid pebbles together so they do not roll or fall out.
4. Why can we not carry water in just our hands?
A) water is too heavy
B) water is dirty
C) water flows out through gaps
D) water is solid
Water is a liquid, so it slips through any opening between your fingers.
Part B: Fill in the Blank
Write the correct answer on each line.
1. The best cup to hold juice has no holes.
Liquids flow, so a cup must be closed on the sides and bottom to hold them.
2. We use a solid bowl to hold soup or cereal.
A solid bowl keeps liquids like soup inside so they do not spill out.
3. Blocks are made of a solid so they stack up.
Solids hold their shape, so blocks can be stacked without changing form.
4. We carry milk in a jug because milk is a liquid.
Liquids need a closed container like a jug so they do not flow out and spill.
5. A wooden chair is strong because wood is a solid.
Solids keep their shape and can hold weight, which is why we make chairs from them.