P
Name 3 types of potential energy.
Elastic potential energy, Gravitational potential energy. Chemical potential energy
ECG
Which of the following do plants produce during photosynthesis?
1. Oxygen only
2. Sugar only
3. Oxygen and Sugar
4. Carbon dioxide and sugar
Ans is Oxygen and Sugar (3)
What is the purpose of Iodine?
To test for the presence of starch
A moving object has _____________________.
kinetic energy
The process of making food is called ______________.
photosynthesis
Light is trapped by ______________ in the leaves.
chlorophyll
___________ is found in the _____________ of a leaf.
Chlorophyll is found in the chloroplast of a leaf.
__________ is produced in the leaves and transported to other parts of the plant
sugar/food/glucose
Energy that is stored in objects is known as _________________.
potential energy
An object on top on the shelf has _______________________ than one at the bottom of the shelf.
more gravitational potential energy
__________ is also produced during photosynthesis. It is given out by the plant through the stomata.
Oxygen
More sugar produced during photosynthesis is stored as _______________.
starch
____________ is our primary source of energy as the energy that is passed on from one living thing to another comes from it.
Sun
_______________ energy found in food, batteries and fuels.
Chemical potential
Formula for GPE
mgh
m = mass g= constant h = height
Plants make their own food using light, ____________ and water.
carbon dioxide
Why must an experiment involving a toy car moving down a ramp be conducted at least 3 times and then the average calculated?
To ensure the results are reliable (RAR)
One plant was put in the sun for 2 hours.
Another identical plant was pit in the class cupboard for 2 hours. Starch test was conducted after 2 hours. What is the changed variable?
The presence of sunlight
Objects above the ground has ________________ energy.
Gravitational potential energy
Formula for KE
KE = 1/2 mv2