Biology
What is the function of palisade cell?
Photosynthesis
what are the products after an acid and carbonate reacts together?
Salt, water, carbon dioxide
What is Geothermal energy?
- Water pumped down to hot rocks rising as stream.
Why do we need protection when woking with corrosive substances?
To protect our skin from being damage and burn.
How many teeth does an adult human have?
32 teeth.
What the acid produced inside our stomach?
Hydrochloride acid
What happen to particles when diffusion happen?
Particles move from high concentration area to low concentration area.
What happen when a red object absorb blue light?
It appears black.
universal indicator paper
How many elements are listed in the periodic table?
118 element.
what is the difference between natural selection and selective breeding?
Selective breeding is intervened by humans, natural selection is by adapting and survival
Ways to effect the reaction rate (include all)
Catalyst, temperature change, surface area change, concentration change
Why can’t sound travel in space?
It needs matter to travel through as it moves
What are ways to seprate a mixture? (Name 4)
Filtration, distillation, chromatography, evaporation, hand picking, magnetic seperation
Which two substances are the main components of bronze?
Tin and copper.
what are the effects of getting fertilizer pollution in water?
causes algae bloom and covers the water, kills plants and animals by stoping the plant and animal down there receive light.
Which element is the red hemoglobin made out of?
Iron
List 2 of the 3 laws of static electricity
Like charges repel
opposite charges attract each other
charged objects pull neutral objects toward them
What can be seen by eyes when a reaction has occurred?
color change, form of bubbles, form of solid (precipitation)
What planet has the largest volcanoes that we know of?
Mars
Name three layers of the earth, then name main two metal that make up the last layer. (inside out)
- Crust
- Mantle
- Core (Nickel and Iron)
What happens to the enzyme when pH changed?
The enzyme will denature and will no longer fit with substrate, no reaction take place.
What is ultrasound waves and what are its uses?
High frequency sound waves.
used to look at structure and organs inside human body (xray)
What variable in the experiment is the manipulated variable?
Independent variable.
What is the only letter that does not appear on the periodic table?
J