Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
What is the amount of space occupied by an object?
|
volume
|
|
|
What is the force of attraction between 2 objects?
|
Gravity
|
|
|
What is the upward force exerted by a fluid?
|
Buoyancy
|
|
|
What is the effect of gravity on mass?
|
weight
|
|
|
What is the "pushing away" of a fluid by an object?
|
Displacement
|
|
|
What is a fluid?
|
A gas or a liquid
|
|
|
What makes lead denser than aluminum?
|
Lead has more atoms than aluminum. (there are more lead atoms than aluminum atoms)
|
|
|
How can you change an objects mass?
|
Add or take away from the object (ex. clay)
|
|
|
How can you change an objects weight without changing its mass?
|
Change the gravity
(Ex. take an object from earth to space) |
|
|
How can you change the volume of an object without changing the mass?
|
Change the objects shape (EX glob of clay.. ball to a boat)
|
|
|
If the density of salt water is 1.2, what will an object with the density of .98 do? Why?
|
It will float. Because it is less dense than the salt water.
|
|
|
What causes the density of water to change when it freezes?
|
The water molecules spread apart as it freezes (water expands when frozen) which increases its volume making the density decrease.
|
|
|
The buoyant force exerted on a submerged object is 350 g. THe gravitational force acting on it is 650. What is the volume of the object? What is the density of the object?
|
The volume of the object is 350 (Buoyant force is equal to volume)
The density is 1.8 g/cm3 |
|
|
A block is 7cm x 8cm x 2cm and has a mass of 67 grams. What is the volume occupied by the object
|
V=length x width x height
=7 x 8 x 2 =112 The volume of the object is 112 g/cm3 |
|
|
A block is 7cm x 8cm x 2cm and has a mass of 67 grams. What is the density?
|
V= length times width times height= 112
D= m/v = 67/112 = 0.6 m=67 v=112 DENSITY IS EQUAL TO 0.6 |
|
|
A 2cm x 2cm x 2cm metal block has a mass of 80 grams.
What volume of water does it displace when it is completely submerged? |
8 ml of water.
(The volume of the block is 2x2x2 = 8. an object displaces its volume in water.) |
|
|
What happens to density if mass increases?
|
If mass increases, Density increases.
|
|
|
What happens to density if volume increases?
|
If volume increases, Density decreases.
|
|
|
What happens to buoyancy if volume increases?
|
If volume increases, buoyancy increases. Buoyancy is equal to the volume of the object soo.. if the volume of the object increases so will the buoyancy
|
