Light and Sound
How does Light travel?
Straight Lines
when materials are changed but remain the same materials, what is the change called?
Physical change
What do you call a scientific guess?
hypothesis
Does matt material absorb or reflect light?
absorbs light
- glossy surfaces reflect light!
What is manufacturing?
how people make products
How does sound travel
in waves
When materials are changed and can not be changed back again, the change is called what?
a chemical change
What did Marie Curie do?
won Nobel prize twice for radioactivity research
What is the difference between a diagram and a picture?
Diagrams have labels!
What do greenhouse gases do?
trap heat around the earth causing climate change
Name 3 sources of light pollution
City lights, advertising signs, car headlights
What are the 3 States of matter
gas liquid solid
What was Ada Lovelace a pioneer in?
being the first computer programmer
Name 3 ways how the sun affect humans negatively?
wrinkles, skin cancer, skin conditions
What is a non-renewable resource
materials that take millions of years to form and can't be easily replaced.
name three natural light sources
fireflies, the sun, aurora borealis
Name a material that you can transform into the three states of matter at home?
water
What did Garret Morgan invent?
inventing the first gas mask or traffic signal
What is noise pollution?
When there are unnatural noises that affect the living things
What is a renewable resource?
Materials that can be replaced naturally in a short amount of time.
Can the rays of light curve?
yes - such as in water.
Name 3 reasons plastics are bad for the environment
- non renewable
- sometimes impossible to recycle
- damages habitats
- may cause cancers
- negatively impacts wildlife
What did Ann Tsukamoto lead research into?
led research into Human Stem Cells
What is the Diderot effect?
It's a spiral of never ending consumption or buying
What are the 3 stages of the water cycle
evaporation, condensation, and precipitation