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WorksheetsScience Semester Exam (mod)
Total questions: 40
Worksheet time: 28mins
What is used to help us understand things that are too big or small to observe?
variables
models
statements
What is a planned way that a scientist can find answers to science questions?
investigation
modeling
prediction
What do you call the description of how an object looks?
Observation
Experiment
Physical Properties
What do you call information that is gathered by a person who is doing an experiment?
Data
Experiment
Conclusion
The ___________________ is the internationally accepted system for measurement.
International System of Units
metric system
customary units of measurement
A triple-beam balance is used to measure the ____________ of an object.
length
mass
distance
Which of these is a measure of mass?
a liter
a meter
a kilogram
Iron + oxygen = rust is an example of a ___________.
physical property/change
chemical property/change
volume
The ability of a metal to allow heat or electricity to pass through it.
conductivity
insulator
mass
I am 2 or more elements chemically bonded.
atom
molecule
compound
__________ are the building blocks of life.
solids
gases
atoms
Volume is ______________.
length X width
height X length
length X width X height
_____ is the force that slows and stops motion between touching objects.
Friction
Gravity
Push
How does friction help us move from place to place?
Friction does not help us.
Friction keeps us from slipping and sliding.
Friction only helps cats.
What is the unit to MEASURE force?
Kilogram
Meter
Newton
When forces are ___________ the object will move.
unbalanced
balanced
light
Speed can be found my calculating...
acceleration/velocity
friction/gravity
distance/time
What form of alternative energy uses the heat from the earth?
solar power
geothermal power
wind power
fuel made from plant or animal waste (organic matter)
hydropower energy
solar energy
biomass energy
the wise use and protection of natural resources
natural resources
green
conservation
Energy made from moving water
hydropower energy
wind energy
alternative energy
What kind of energy?
Thermal (kinetic) energy
Chemical (kinetic) energy
Chemical (potential) energy
What characteristic do all renewable resources share?
Produced by waste products
Form underground from dead organisms.
Replaced in a short period of time
Which of the following shows an energy transformation from chemical energy to electrical to light energy?
A bolt of lightning lights the night sky.
A candle glows brightly in the dark.
A battery causes a flashlight to shine.
Warm air rises and the cool air sinks demonstrates this type of heat transfer.
conduction
convection
Insolation
The heat from a hot burner to a pot is transferred by ______.
convection
insulation
conduction
When the 2nd story of a house is warmer than the 1st floor of a house is heat transfer through
conduction
convection
thermal equilibrium
The Law of Conservation of Energy states:
Energy can created or destroyed but not transformed
Energy cannot be created or destroyed, it can only transformed
Energy due to motion is ____________ energy.
Potential
Energy
Kinetic
Gasoline that powers a car is an example of...
Nuclear energy
Chemical energy
Sound energy
Heat energy transfer is:
the transfer of heat from warmer to colder objects
the radiation of heat from an object.
a loss of heat energy.
What is the formula for density?
density = mass x volume
density = mass / volume
density = mass - volume
Why do some substances float on water?
they are warmer than water
they are cooler than water
they are less dense than water
What is the Law of Conservation of mass?
Mass is created in a chemical reaction
Mass is created in a physical change
Mass is never created or destroyed
