Show:
Scientific Method
Energy & Electricity
Rotation/Revolution
Moon/Tides/Eclipses/Stars
Ecosystems
100
Kourtney is doing an experiment to test which brand of paper towel is the most absorbent - Bounty or Scott. She pours the same amount of water on the same counter top using the same measuring cup, and then uses two equally sized towels, one of each brand, to wipe up the spills. What is being controlled in this experiment? What is the variable?
Controlled: amount of water, measuring cup, counter top, size of towel Variable: Brand of paper towel
100
What causes sound?
Vibrations
100
Why does the sun rise in the east and set in the west?
Because the Earth rotates in a counterclockwise direction
100
What are the highest tides of month called? The lowest tides? How are the Earth, moon, and sun arranged during both of these tides? What moon phases occur during these arrangements?
Highest: Spring; Earth, Moon, and Sun are in a straight line, full moon or new moon Lowest: Neap: Earth, Moon, and Sun form right angles, First Quarter or Last Quarter
100
What are the ingredients needed for photosynthesis? What products result?
Ingredients: Carbon dioxide, water, sunlight Products: Oxygen, glucose
200
Melissa wants to test brands of kettle corn to see which one results in the most to eat per bag. Describe an experiment Melissa could perform to do so. What would she have to control?
Choose multiple brands of kettle corn then pop them in the same microwave for the same amount of time each. Using the same measuring cup for each brand, measure how many cups of kettle corn were popped then compare to see which one resulted in the most to eat.
200
Describe the difference between conduction and convection. Give an example of each.
Conduction - thermal energy passes through two objects that are touching (burner to pot) Convection - the passing of thermal energy requires a liquid or gas (campfire to you)
200
How long does a full revolution around the sun take for Earth? How do we accommodate for this?
365 1/4 days; a leap year every 4 years where we add an extra day to February
200
Describe the difference between a lunar eclipse and a solar eclipse. How are the Earth, Moon, and Sun arranged during these eclipses? What do we witness from Earth?
Lunar: Sun, Earth, Moon; Earth casts a shadow on the moon; the moon appears red Solar: Sun, Moon, Earth; Moon casts a shadow the Earth; we can witness total or partial blockage of the sun
200
Describe the difference between a food chain and food web.
A food chain traces one series of organisms while a food web shows how multiple food chains interconnect
300
Ben is testing which brand of gum provides flavor that lasts the longest, Orbit, Extra, or Stride. Develop a complete hypothesis that could be used for this experiment
Orbit's flavor will last longer than Extra or Stride.
300
The pitch of a sound is determined by the _________ of its vibrations. What 2 ways can we alter the sound source to change its pitch?
Speed/frequency; Make the sound source longer or thicker
300
How many degrees is the Earth tilted?
23.5 degrees
300
What side of the moon is visible during the waxing phases? The waning phases?
Waxing: Right Waning: Left
300
What is parasitism? What are the names of the two members in a parasitic relationship.
A relationship in which one organism benefits but the other is harmed. Parasite and host
400
Eric is testing different laundry detergents to determine which one removes stains the best. Name 3 things that he must control during this experiment.
Amount of detergent, washing machine used, size and type of stain, type of clothing that is stained
400
Describe the direction that thermal energy is transferred.
From matter with a higher temperature to matter with a lower temperature
400
Why do we have seasons?
Because the Earth is tilted on its axis as it revolves around the sun - hemisphere tilted towards sun has SUMMER - hemisphere tilted away from sun has WINTER
400
Why do we see different constellations throughout the year?
Because the Earth does not stay in one spot, it revolves around the sun - we see different constellations at different parts of our journey
400
Name 3 non-living parts of an ecosystem and their importance.
Air - photosynthesis/respiration; Water - drinking/photosynthesis; Rock - shelter
500
After coming up with a question you want to answer/problem you want to solved, what is the next step in the scientific method?
Research your question/problem so you can come up with a logical hypothesis
500
______________ is the bouncing of light. What is refraction?
Reflection; refraction is the bending of light
500
Explain why we have warmer temperatures in summer and colder temperatures during winter.
Because we are either tilted towards or away from the sun - when we are tilted towards the sun we receive direct sunlight and have warmer temperatures - when we are tilted away the sun's rays hit us less directly and we have colder temperatures
500
How much of the moon is always reflecting light from the sun?
Half - although this half is not always visible to Earth (only during full moon)
500
Explain what a predator and a prey are. Give an example of a predator-prey relationship.
Predator - hunts other animals to be food Prey - is hunted by another animal Example: owl and mouse