6th Grade Science
An energy source that is not able to be replenished is called this.
nonrenewable
A student changes the amount of sunlight a plant receives and measures growth. What is the dependent variable?
Plant growth
What fossil fuel is formed from ancient plants?
Coal
Which subatomic particle has a positive charge?
Protons
How many moons does Mars have?
2
Wind power and solar power are what type of energy sources.
Renewable
These are the 3 basic states of matter?
solid, liquid, and gas
This is the source for almost all energy on Earth.
Sun
Is melting ice a physical or chemical change? Explain.
Physical change because it can return back to its original state by freezing
Weather instrument that measures temperature
Thermometer
The amount of time it takes for Earth to make one full revolution around the sun.
365 days or 1 year
Which variable is changed by the scientist?
independent variable
A glacier breaks rock into smaller pieces, melts, and carries the sediment away. What two Earth processes occurred?
Weathering and Erosion
What causes tides on Earth?
The gravitational pull of the Moon and the Sun.
This planet is called the red planet.
Mars
Name the four terrestrial planets
Mars, Earth, Mercury, and Venus
The amount of time it takes for Earth to make one full rotation on its axis.
24 hours
This is the word for when a substance goes from a solid to a liquid
Melting
During which Moon phases do spring tides occur?
New Moon and Full Moon.
These are the cardinal directions.
What is north, south, east, and west?
This force causes objects to be pulled towards Earth's center.
gravity
This is the largest planet in our solar system?
Jupiter
The regular weather patterns over long periods of time in a place or region is called this.
Climate
These are the 3 phases of the water cycle.
What is evaporation, condensation, and precipitation.
Name the four gas planets
Jupiter, Saturn, Uranus, and Neptune