Ecosystem
What is a food chain?
It represents the order in which organisms eat each other or depend on each other for food.
TRUE OR FALSE
Force is a lift and drop motion applied on something.
FALSE
Force is a push or pull motion applied to something.
What are the 6 forms of energy we discussed in class?
1. Potential
2. Kinetic
3. Heat
4. Light
5. Sound
6. Electrical
What is the current source of energy we use for electricity?
Fossil Fuels
What is a machine?
A machine is a tool or device that makes a certain task easier to do.
What are the different animal diets?
Surface Area
An ice cube is put in a hot glass of water.
Describe the flow of heat.
The heat from the hot water will flow to the frozen water (ice), which will cause it to melt.
What do we call the type of resources that can quickly replenish, or will not run out?
Renewable Resources
Which simple machine can be described as 'a spiral inclined plane?'
A Screw
What happens to energy as it goes down the food chain?
It decreases.
Why do the Earth and other planets revolve around the sun?
Due to gravity
What are the 3 kinds of potential energy?
1. Gravitational Potential Energy
2. Chemical Potential Energy
3. Elastic Potential Energy
What are the 3 different forms of renewable energy that we discussed in class?
1. Solar Power
2. Hydropower
3. Wind Power
Which of the following demonstrates work being done?
a) A person lifting a heavy bag.
b) A person pushing a box on the road.
c) Neither A nor B
d) Both A and B
d) Both A and B
REMEMBER: Work is done when the object moves in the same direction the force is applied.
In a food chain, which of the following is likely to be herbivore? Why?
a) Producer
b) Primary Consumer
c) Secondary Consumer
d) Decomposer
The primary consumer.
The primary consumer eats the producers, and producers are plants.
Jennifer wants to create a track for her toy cars so they slide quickly on the roads.
Which material should she use for the roads of her car?
a) Sandpaper
b) Cartolina
Cartolina has a smoother surface compared to sandpaper.
Maze plugs in her laptop to charge it. Later, she unplugs her laptop, turns it on to watch her favorite show for 1 hour.
Describe the transformation of energy that occurred.
Electrical ➢ Chemical ➢ Light, sound, and heat
(electricity) ➢ (laptop battery) ➢ (screen, sounds, heat from the laptop)
A small community on a tropical island is thinking of switching to a greener source of energy.
Their island is usually very windy and sunny all-year-round. They are well acquainted with water because of the ocean around them, but they have no rivers, and not enough space to have a large reservoir.
What energy source would you recommend to them and why?
BEST ANSWERS:
- Solar Power
- Wind Power
Lacy is a young lady in a wheelchair. Currently, she is on the 5th floor of a building and she needs to go down to the ground floor to meet her driver.
What machines/simple machines will you suggest that she use to get to her destination?
Ramp (Inclined Plane)