Gravity, Mass and Weight
Formation of the Solar System
Tides
Forms of Energy
Changes in Energy
100
TRIVIA: What is the youngest country?
South Sudan (formed in 2011)
100
What is the name for the large cloud of dust and gas that the solar system formed out of?
A nebula
100
TRIVIA: What is the largest Ocean in the World?
The Pacific Ocean
100
TRIVIA: Who is the most popular person from Thailand (based on number of IG followers)?
Lisa - 105M followers
100
TRIVIA: How many medals did Thailand win in the 2024 Olympics
6 medals
1 gold, 3 silver and 2 bronze
200
What is the name of the device that is used to measure the weight of an object?
A forcemeter / Newtonmeter
200
TRIVIA: What is the only metal that is a liquid at room temperature?
Mercury
200
1. What is the name of the force responsible for the tides?
2. Why is this force much stronger from the Moon than the Sun?
1. Tidal force
2. The Moon is much closer to Earth than the Sun
200
What is another name for light energy?
Radiant energy
200
What does the word dissipation mean?
To spread out to the surroundings.
Wasteful energy is dissipated.
300
What is the weight of a 60 kg on Earth?
600 N
300
Why do scientists use models to explain how the solar system was formed.
They were not around to observe the formation of the solar system.
300
If the low tide at Pattaya beach is at 6:30 AM, what time will the next high tide be?
12:30 PM
There is 6 hours between the low tide and high tide
300
What type of energy is stored in a battery?
Chemical energy
300
A lightbulb converts electrical energy into light and thermal energy. Which of these forms of energy is dissipated.
Thermal energy
400
What is the mass of a ball that weighs 80N on Mars (g=4 N/kg)?
20 kg
400
The closer a planet is to the Sun the (stronger / weaker) the gravitaional force it experiences. This means the closer a planet is to the Sun the (faster / slower) it orbits the Sun.
1. Stronger
2. Faster
400
The average depth of water near the coast of Phuket is 4 meters.
The largest tidal range at this location is 3 meters. What is the maximum depth depth of water at this place.
5.5 meters
400
List 2 types of energy stores
Gravitational potential energy
Elastic potential energy
Chemical energy
Kinetic energy
400
A lightbulb uses 200J of electrical energy. It gives of 80J of light energy. How many J of thermal energy are dissipated?
120J
500
A 3kg box is placed on a far off planet and its weight is 90N. Calculate the strength of gravity on this planet.
30 N/kg
500
In your own words, describe how the solar system formed.
500
Draw the position of the Sun, Earth and Moon during a Spring tide and during a Neap tide.
Spring tide: Sun, Earth and Moon in a straight line
Neap tide: Sun, Earth and Moon for a right angle
500
How do you calculate the amount of kinetic energy an object has?
DON'T FREAK OUT, THIS IS NOT ON YOUR TESTKinetic energy = 1/2 x mass x speed2
500
Draw a diagram showing the energy transformations that happen in a motorcycle. Label each form of energy as useful or wasteful.
Chemical energy transforms into kinetic (useful), thermal (wasteful) and sound (wasteful) energy.