Vocabulary
What is evidence?
Something that proves that something is true.
Explain using evidence from one of our investigations how you know that air takes up space.
(Balloon filling up with air, air taking up space in a straw and causing other objects to move, etc).
What are the three states of matter?
Solid, liquid gas.
What is a property?
What something feels, sounds, tastes, looks, and smells like. Also, the size, shape, and mass of an object?
What does it mean to make an observation of something?
To notice or observe something.
What is air resistance?
When air pushes against an object and slows it down.
Who am I?
I am the easiest to hold. My size and shape always stays the same, unless something forces them to change. My mass (how much matter I am made of) stays the same, as well.
Solid.
Describe a property of object A.
Answers may vary.
What is matter?
Anything that takes up space.
Explain using evidence from one of our investigations how you know that air takes up space.
(Balloon filling up with air, air taking up space in a straw and causing other objects to move, etc).
Who am I?
Even though I am easy to see, I am hard to hold. My size (how much space I take up) never changes, even though my shape changes wherever you put me. Like my two friends, my mass (how much matter I am made of) always stays the same.
Liquid.
Describe a property of object B.
Answers may vary.
What is air resistance?
When air pushes against an object and slows it down.
True or false.
If you dropped a bowling ball and a feather the same distance from the ground, the bowling ball would hit the ground at a faster rate because it is heavier than the feather.
False.
Weight has nothing to do with how fast an object falls to the ground. Air resistance is the force that causes an object to be slowed down.
Who am I?
Unlike my friends, I am hard to see and to hold. The atoms in me move around freely and spread out in the space I am in. My size and shape changes everywhere I go. However, my mass (how much matter I am made of) always stays the same.
Gas.
Think back to the materials we observed last week.
What words did you use to describe how one of the materials felt like? Say what material it was.
Answers will vary.
What is a property?
What something feels, sounds, tastes, looks, or smells like. Also the size, shape and mass of something.
Describe what caused the feather to hit the ground at a slower rate than the ball?
Air resistance acted as a force on the shape of the feather and slowed it down.
Describe the difference between a liquid and a gas.
In a liquid, the atoms have space between them, however they are not free flowing like a gas. The shape of a liquid changes, while its size and mass always stays the same.
In a gas, the atoms are so spread apart that they move as freely as the space they are in. The size and the shape of a gas always changes, while the mass (how much matter is in an object) stays the same.
Which of these properties are observable (can observe with your senses) and which ones are measurable (measure with tools)?
Sight, touch, sound, smell, taste, size, shape, and mass.
Observable:
Sight, touch, sound, smell, taste
Measurable:
Size, shape, and mass.