What is a Solid?
What do we call a material that doesn’t change shape easily, like a rock or a pencil?
a solid
What would you use to measure the weight of a bag of apples?
a scale
If you have a small toy car and a big toy truck, which one is likely to have more mass?
the big toy truck
If you want to measure the length of a table, what tool would you use?
measuring tape
What happens to a solid when it’s heated?
It can expand or melt, depending on the temperature.
if a liquid is cooled down, it might turn into a solid. What is this process called?
freezing
What is the difference between weight and mass?
Weight is how heavy something is, and mass is how much matter it has.
Why does a big rock have more weight than a small rock?
because it has more mass
Which unit would you use to measure the length of a pencil: millimeters, grams, or liters?
millimeters
Why is ice slippery?
Because the ice surface melts slightly when pressure is applied, creating a thin layer of water.
f you have a piece of clay, you can change its shape. Why is it still a solid?
Because it keeps its own volume and doesn’t flow like a liquid
How would you weigh something that is too big to fit on a regular scale, like a car?
You would use a different kind of scale, like a truck scale, to weigh it
How would you find out if a solid object, like a cube, is bigger than a ball?
you can measure their length, width, and height, or compare their volumes
If you have a ribbon that is 20 meters long, how would you convert that to centimeters?
20m= 2000 cm
Can solids float in water? Give an example of a solid that floats.
Yes, like a piece of wood or ice
Can a solid change its shape if you push it hard enough? Give an example.
es, like when you bend a metal spoon with enough force, it will change shape.
If you went to the Moon, would your weight be more or less than on Earth?
Less, because the Moon has less gravity than Earth
How could you make a large piece of clay smaller without changing its mass?
you could flatten it out, and it would still have the same mass, just a different shape
Why is it important to use the same units of measurement when comparing two lengths?
Because using different units could give you incorrect results, so you need to convert them to the same unit to compare them properly
Why do metal objects feel colder than plastic objects even if they are at the same temperature?
Metal conducts heat away from your skin faster than plastic, making it feel colder.
If you had a glass of water and you froze it into ice, what happened to the water to make it a solid?
The water cooled down and froze, changing from a liquid to a solid.
If two objects have the same weight, can we say they also have the same mass? Why or why not?
Yes, because weight is related to mass, and if the weight is the same, their masses should also be the same.
If you have two objects that are the same size but one is heavy and the other is light, what can you infer about their densities?
The heavier object has a higher density, meaning its mass is packed into a smaller space.
If a pencil is 10 centimeters long and a piece of string is 30 centimeters long, how many pencils could fit in the length of the string?
three pencils
How would the properties of a solid, like a metal, change if it was heated to a very high temperature?
The metal would expand and might become softer, or it could melt into a liquid if the temperature is high enough.