Weight/Mass Definitions
What is the amount of matter or 'stuff' in an object called?
mass
Which has more gravity, the moon or Jupiter? Why?
Jupiter because it is larger.
The amount of space an object takes up is called ____________________.
volume
If you have a box and need to find out how much space it takes up, how could you do it?
LxWxH
A variety of different types of plants and animals means _____________________. (hint...has the prefix bio at the beginning)
biodiversity
What is the downward force of gravity on an object called? (Hint...it changes on different size planets)
Weight
Who was the man who studied gravity and came up with the 3 Laws of motion?
Sir Issac Newton
Explain in detail what would happen if you got in a tub filled to the very top?
It would overflow, because the water would get displaced in an amount that is equal to your weight.
If water in a graduated cylinder read 35 mL, and you dropped a rock in it which made it rise to 50 mL, what is the volume of the rock?
15 g/cm3
What is population density?
A description of how close people live by each other.
What is the force of attraction between all objects called?
Gravity
If you dropped a bowling ball and a feather on Earth, which would hit the ground first and why?
On Earth the bowling ball would hit first because of air resistance. If there was no air, then they would hit at the same time.
When an object is being pushed down in the water, there is a force pushing back up at it. That is ___________________.
buoyancy
Mass divided by volume equals density.
If an object has a mass of 20grams, and a volume of 10cm3, then what is the density of the object?
2 g/cm3
What is the difference between abiotic and biotic?
abiotic is non-living, and biotic means living or use to be alive
The rate at which an object increases its speed is called _________________.
Acceleration
Which takes longer to speed up and slow down out of a small car or a large hauling truck? Why?
A large hauling truck has more mass, so it would take longer to accelerate and slow down.
Explain which objects will sink or float, and then answer why.
granite 2.6 ice 0.9 saltwater 1.03 blood 1.6
alcohol 0.8 gold 19.3
granite-sink, ice-float, saltwater-sink, blood-sink, alcohol-float, gold-sink
The density of water is 1 g/cm3. Anything above that will float, anything higher than that will sink.
Density multiplied by volume equals mass.
If a liquid has a density of 3 g/mL, and a volume of 20mL, then what is the mass of the liquid?
60grams
Only living things have ____________, which are the building blocks of all life forms.
cells
We use grams when measuring mass. Describe the difference between a milligram and a kilogram.
A milligram is 1/1000 of a gram, and a kilogram is 1000 grams.
If a car was in outer space with nothing else around how much would it weigh? Describe what would happen if there was a toy car close to the actual car?
The car would be weightless, and if a toy car was close to the real car it would be attracted to the gravitational force of the larger car.
Explain why a tiny steel marble will sink in water, and a styrofoam ball the size of our school will float in water.
Objects with a lower density than water will always float, and objects with a higher density than water will sink. Density is how compact the particles inside are arranged, and size doesn't matter.
Mass divided by density equals volume.
If Silver has a mass of 2000 grams, and a density of 10g/cm3, then what is the Silver's volume?
200cm3
What is the difference between an element and a compound? (Hint...one is made up of only one type of atom, and the other is made up of 2 or more)
An element is made up of one type of atom. It is pure. A compound is made up of 2 or more types of atoms bonded together.