Show:
Human Body
Energy
Light and Sound
Electricity/Magnets
Machines/Technology
100
Which part is NOT part of the digestive system: mouth, lungs, large intestine, or stomach?
Lungs
100
What kinds of energy are found in a fire? Name at least two.
Sound energy, heat/thermal energy, light energy.
100
Which is faster - light or sound?
Light.
100
How many poles do magnets have? What are they called?
Two - the north and south poles.
100
How many simple machines are there?
Six.
200
What is the muscular organ that pumps blood around your body through your blood vessels?
The heart.
200
What are three things you can do to care for the Earth?
Recycle, turn off lights, save water, use efficient light bulbs, eat less meat, take public transportation, etc.
200
Name one transparent material, one translucent material, and one opaque material.
Transparent: glass, window, etc. Translucent: pastics, sunglasses, etc. Opaque: door, chair, etc.
200
Give three examples of appliances.
Television, fridge, computer, washing machine, dishwasher, toaster, oven, microwave, etc.
200
What are complex machines?
Machines that are made up of many parts.
300
The brain is part of which "system"?
The nervous system.
300
Name one kind of renewable energy source and one kind of non-renewable energy.
Renewable: geothermal, biomass, solar, wind, hydropower. Non-renewable: coal, oil, natural gas, uranium (nuclear).
300
What color is something that absorbs everything but green light?
Green.
300
Why do we need insulators?
To protect us from the harmful effects of electricity.
300
What is a gadget? Give one example.
A small tool or device that does something useful. USB pen drive, MP3 player, smart phone, etc.
400
What happens in the alveoli?
Gas exchange: the air passes through the walls of the alveoli into the capillaries.
400
What is an example of biomass?
Wood, crops, etc. (organic material)
400
Describe two types of mirrors.
Flat - normal Concave - inward curve (tall and thin) Convex - outward curve (short and fat)
400
You have a circuit with 5 bulbs. One of the bulbs is broken. Describe what would happen to the other bulbs if it was a series circuit.
The other bulbs would not light up.
400
All levers have three parts. What are they?
A fulcrum, load, and force.
500
One time of circulation is pulmonary circulation. What are the other two kinds?
Systemic and coronary.
500
Where does petroleum (oil) come from?
Dead plants and animals are turned into oil after millions of years with lots of heat and pressure underground.
500
Sound travels at a speed of 340 meters/second. If you see lightning and then hear the thunder 25 seconds later, how many kilometers away from the storm are you?
8.5 kilometers.
500
Does a proton, neutron, or electron have a positive charge? What about a negative charge? And no charge?
Proton - positive; Neutron - no charge; Electron - negative
500
Name the six simple machines.
Lever, Inclined plane, Wedge, Screw, Wheel and axle, Pulley