Scientific Method
A smart guess I make before testing something.
hypothesis
shows how many food chains are connected in a bigger system
food web
name a celestial object that reflects light
moons, planets, asteroids, and comets
Give an example of expansion and contraction used in this unit
thermometers, frozen lakes, railroad tracks, concrete sidewalks
Hydroelectricity, Biofuel, wind energy
what is RENEWABLE energy source
What is one thing scientists do if their guess is wrong?
Try the experiment again, change one variable,... other accepted answers
name 2 traditional First Nations sacred plants
sage, sweetgrass, cedar, and tobacco
space object that:
Orbits the Sun
Has enough gravity to be mostly round
Has not cleared its path of other space rocks and debris (it shares its orbit with other objects)
dwarf planet
Melting, Solid → Liquid
Freezing, Liquid → Solid
Boiling, Liquid → Gas
Evaporation, Liquid → Gas
Condensation, Gas → Liquid
Sublimation, Solid → Gas
Deposition, Gas → Solid
What is one way to save energy at home?
possible answers:
Turn off lights when you leave a room.
Unplug electronics when you're not using them (like chargers or game consoles).
Use LED light bulbs, which use less electricity.
Take shorter showers to save hot water.
Open the curtains during the day to use sunlight instead of turning on lights.
Why is it important to use evidence in science?
To prove what you think is true
What 2 things plants produce during photosynthesis?
sugar, and oxygen
Name 2 challenges of living in space
No air or water
Low or no gravity
Extreme temperatures
Radiation from the Sun
Feeling lonely or far from home
Gas → Solid
deposition
What does “biofuel” come from?
Plants and animal waste materials
The part I keep the same in the experiment
controlled variable
What abiotic factor can be found in every food chain?
Sunlight provides the energy that producers (like plants, algae, or phytoplankton) use to perform photosynthesis.
a region filled with space rocks between Mars and Jupiter.
asteroid belt
why ice floats and why this helps aquatic life survive
Ice floats because it is less dense than liquid water.
When water freezes, the molecules spread out and form a solid structure that takes up more space. This makes ice lighter than the same amount of liquid water, so it floats on top.
Which energy source can be used before it is processed?
solar, wnd, water (hydro), geothermal
A student tests how sunlight affects plant growth. What is the manipulated variable?
amount of sunlight
something in nature that takes in and stores carbon dioxide from the air. Examples include forests, oceans, ponds, and the bottoms of lakes.
what is a carbon sink
A station where astronauts live and do experiments while orbiting Earth.
ISS
International Space Station
describe the difference between celcius, kelvin, and farenheit
Celsius is common in everyday life.
Fahrenheit is used in the U.S.
Kelvin is for scientific research, especially in space and physics.
What is one way energy companies work to protect the environment?
answers will vary