How is the density of an object determined?(1 point)
Responses
by multiplying the volume of an object by its mass
by multiplying the volume of an object by its mass
by subtracting the mass of an object from its volume
by subtracting the mass of an object from its volume
by adding the volume of an object to its mass
by adding the volume of an object to its mass
by dividing the mass of an object by its volume
by dividing the mass of an object by its volume
What is the density of a cube with a side length of 2 meters and a mass of 40 kg?(1 point)
Responses
32 kg/m
32 kg/m
5 kg/m3
5 kg/m3
60 kgm
60 kgm
120 kg/m2
5 kg/m3
What is the volume of a cube with a side length of 3 centimeters?(1 point)
Responses
3 cubic centimeters
3 cubic centimeters
9 square centimeters
9 square centimeters
27 cubic centimeters
27 cubic centimeters
6 square centimeters
27 cubic centimeters
What does the density of an object tell you about the object?(1 point)
Responses
what amount of space the object takes up
what amount of space the object takes up
how compact the object is
how compact the object is
what the weight of the object is
what the weight of the object is
how much matter the object has
how much matter the object has
Which term describes the amount of matter in a tree?(1 point)
Responses
the height of the tree
the height of the tree
the volume of the tree
the volume of the tree
the mass of the tree
the mass of the tree
the density of the tree
the mass of the tree
The density of an object is determined by dividing its mass by its volume. To calculate the density, you need to know both the mass and the volume of the object.
To find the mass of an object, you can use a balance or a scale. Place the object on the balance or scale and measure its mass in units such as grams or kilograms.
To find the volume of an object, the method depends on the shape of the object. For regular-shaped objects like cubes or rectangular prisms, you can measure the length, width, and height of the object and use the formula V = length x width x height to calculate the volume. For irregular-shaped objects, you can use methods like displacement (submerging the object in water and measuring the change in water volume) or formulas specific to the object's shape.
Once you have the mass and volume of the object, you can divide the mass by the volume to calculate the density. The unit of density is typically grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³), depending on the units used for mass and volume.