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Graphs
Formulas
C, C, R
Matter
Force
100
What point on a roller coaster has the greatest potential energy? Why? (See picture)
Point A because it is at its highest point.
100
What would a pencil's GPE be if it weighed 1.5 kg and was dropped from a desk 36 inches from the ground.
54 J
100
What is conduction?
Energy transfer through contact.
100
What changes in the amount of matter in an ecosystem?
Matter does not change in an ecosystem.
100
Give an example of a ferromagnetic object.
(Answers will vary)
200
What is standard gravity measured as?
9.8 m/s
200
What is the GPE for a box 12 kg that is dropped 8 meters above the ground and falls for 4 seconds?
12 x 8 = 96 J
200
What is convection?
The circular movement of heat rising and cold sinking.
200
How does gravity affect the water cycle?
- Causes precipitation to fall Holds liquid and solid water on the surface
200
Is a large magnet stronger than a smaller magnet? How can you tell?
It would depend on the strength of the magnet, not the size. You can tell by seeing if it can attract ferromagnetic materials.
300
What is Kinetic Energy?
Maximum speed
300
A round plate that weighs 3.8 kg is dropped from 8 meters high. It takes the plate 2.4 seconds to hit the ground. What is the GPE?
30.4 J
300
What is radiation?
The transfer of energy through electromagnetic waves.
300
What is the relationship between plants and animals in terms of what they give to the other?
Plants give animals GLUCOSE and OXYGEN. Animals only give plants CARBON DIOXIDE.
300
How do you build an electromagnet?
Wrap a wire around a ferromagnetic core and attach to an electrical source.
400
What point on the roller coaster has the greatest kinetic energy? Why?
Point C because it is at its maximum speed.
400
What is the formula for GPE and what is it measured in?
Mass x Weight and it is measured in Joules
400
What is an insulator and conductor?
An insulator keeps something warm. A conductor allows heat to be released.
400
What happens when the third trophic level dies?
Decomposers break the body down into nutrients that go into the soil for plants to use.
400
What does a gravitational force field do?
It attracts/ pulls only
500
Draw a roller coaster and label GPE, Max KE, Gaining KE, Gaining PE.
(See roller coaster)
500
Describe the stages of an elastic band in terms of maximum potential energy and maximum kinetic energy.
Max PE: When it is stretched out Max KE: Right when it is let go
500
Give an example of Conduction (1), Convection (2), Radiation (3).
Conduction (ex. metal slide feeling warmer than the air around you) Convection (ex. A radiator blowing heat into the room, warm air rises, cold air sinks) Radiation (ex. Leather seats of a car becoming hot when sitting in the sun)
500
What is the formula for Photosynthesis?
CO2 + H2O + Sun ---> O2 + Glucose
500
What does a magentic force field do to an object?
It attracts/ pulls or repels/pushs