What tools do scientists use to monitor the Earth's weather from space?
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Weather satellites
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What tools do scientists use to monitor the Earth's weather from space?
Weather satellites
What are two examples of extreme weather that can affect farming?
Floods and typhoons
Which technology helps farmers predict how the weather will affect their crops?
Weather satellites
What can weather satellites tell farmers about the condition of their fields?
Whether the fields have too much or too little water
Besides monitoring weather, what can satellites predict regarding farm output?
How much crop the farm will produce
Why do farmers use satellite data to plan and adjust to weather changes?
To maximize the amount of crop produced
What term is used to describe an object's size, shape, colour, and material?
Properties
What are the four main properties used to describe objects?
Size, shape, colour, and material
What are two examples of objects showing different sizes?
Small steel clips and a big stapler
What are two objects described in terms of their length?
Short crayons and a long measuring tape
What are four examples of objects showing different shapes?
Circular globe, rectangular pencil box, square notepad, and triangular set square
What shape is a globe?
Circular or round
What is the shape of a notepad?
Square
What is the shape of a set square?
Triangular
What word is used to describe objects that have many colours?
Colourful
What are four common materials used to make objects?
Wood, metal, plastic, and rubber
What material is typically used to make a fork and knife?
Metal
What material are gloves and rubber bands made of?
Rubber
When comparing objects, what two things do we look for in their properties?
Similarities and differences
What do we call objects that have the same properties?
Similar
What do we call objects that do not have the same properties?
Different
What two properties are similar for a blue plastic exercise ball and a red plastic plate?
Shape and material
What two properties are different between a blue plastic exercise ball and a red plastic plate?
Size and colour
What can we do with objects that have the same properties?
They can be placed in the same group.
What are two examples of objects that belong in a group of round objects?
Bicycle wheel and chocolate chip cookie
What are three examples of objects that belong in a group of square objects?
Cracker, pillow, and chessboard
What is an example of an object that would belong in a group of plastic objects?
Plastic food containers
How are materials chosen for making objects?
Based on their properties
What are three properties of wood that make it suitable for a chair?
Strong, supports heavy weight, does not break easily
What material is used to make balloons because it is easily stretched without breaking?
Rubber
What material is used to make nails because it is strong and does not break easily?
Iron (strong metal)
What material is used for window panes because it is transparent?
Glass
What property of glass allows light to enter a room through a window?
Transparent
What are three properties of plastic that make it suitable for water bottles?
Light, waterproof, and does not break easily
What property is most important when choosing a material for a raincoat?
Waterproof
What is a suitable material for making a raincoat?
Plastic (or other waterproof materials)
What is the purpose of iron nails?
To hold things (like a picture) in a wall
What two instruments can be used to measure the length of an object?
Ruler or measuring tape
Which tool is used to measure the size of a round object?
Measuring tape
Where should a measuring tape be placed on a round object, such as a beach ball?
Around its middle
What is the measure of how much material is in an object?
Mass
What two instruments are used to measure the mass of an object?
Lever balance or electronic balance
What happens to a lever balance when an object with greater mass is placed in one of its pans?
Tilts the balance downwards
What tool is specifically mentioned for measuring the size of objects that aren't flat?
Measuring tape
What type of scale shows mass as a digital number on a screen?
Electronic balance
What unit of measurement is shown in the textbook for the length of a pencil?
Centimetres (cm)
What unit of measurement is used for the mass of the toy bear on the electronic balance?
Grams (g)
What do we produce when we throw away objects that are old or broken?
Waste
What is the impact of too much waste?
Harmful to the environment
What are the three "Rs" that help to protect our environment?
Reduce, Reuse, and Recycle
Which "R" involves not using or throwing things away unnecessarily?
Reducing waste
What is an example of a way to reduce the use of plastic bags?
Bringing a reusable shopping bag
Which "R" involves using objects again instead of throwing them away?
Reusing
What is an example of reusing an object?
Donating clothes that no longer fit
Which "R" involves turning waste materials into useful new objects?
Recycling
What are three common materials that can be recycled into new products?
Paper, plastic, and glass
What are the color-coded containers used to sort paper, plastic, and glass?
Recycling bins
What specific tools do scientists build to monitor Earth's weather from space?
Weather satellites
What type of environmental events can significantly impact farming?
Extreme weather (such as floods and typhoons)
Besides monitoring storms, how do weather satellites help farmers manage their soil conditions?
Predicting the amount of water in fields (too much or too little)
Why is predicting crop production using satellites useful for farmers?
Adjusting to weather changes to maximize crop production
What are the four main properties of objects mentioned in the text?
Size, shape, colour, and material.
What are four common shapes listed as properties of objects?
Circular, rectangular, square, and triangular.
What term is used to describe objects that have many colors?
Colourful
What two things are looked for when comparing objects' properties?
Similarities and differences
Which objects can be classified or placed in the same group?
Objects that have the same properties.
List four types of materials objects are commonly made of according to the quick check.
Wood, metal, plastic, and rubber.
On what basis is an object's material chosen?
Its purpose.
What properties of wood make it suitable for a chair?
Strong and does not break easily.
What makes rubber a good material for making balloons?
Rubber can be stretched easily without breaking.
Why is iron used to make nails that are hammered into walls?
It is a strong metal that does not break easily.
What is the key property of glass that makes it suitable for window panes?
Transparent (allows light to enter).
What properties of plastic make it ideal for making water bottles?
Light, waterproof, and doesn't break easily.
What instruments can be used to measure the length of an object?
Ruler or measuring tape.
Which tool is used to measure the size around the middle of a round object?
Measuring tape.
What is the definition of mass?
The measure of how much material is in an object.
Which two instruments can measure the mass of an object?
Lever balance or electronic balance.
When comparing two objects on a lever balance, how can you tell which has more mass?
The side with the greater mass tilts downwards.
How is waste produced?
By throwing away old or broken objects.
What are the three 'R's used to help the environment?
Reduce, Reuse, and Recycle.
What R-word means to not use or throw things away unnecessarily?
Reduce
What term describes using an object again instead of throwing it away?
Reuse
What process involves making useful objects from waste materials?
Recycle
What are three common materials that can be recycled into new products?
Paper, plastic, and glass.
What tools do scientists build to monitor Earth's weather from space?
Weather satellites
What kind of weather conditions significantly affect farming?
Extreme weather (such as floods and typhoons)
What can weather satellites tell farmers about their fields?
Whether fields have too much or too little water
Besides water levels, what can weather satellites predict for a farm?
How much crop the farm will produce
Why do farmers use satellite predictions to plan and adjust to weather changes?
To maximize the amount of crop produced
What are the four common properties used to describe an object?
Size, shape, colour, and material.
What are some common words used to describe an object's size?
Big, small, short, and long.
What are some common words used to describe an object's shape?
Circular, rectangular, square, and triangular.
What do we call objects that have many different colours?
Colourful
What are four examples of materials that objects can be made of?
Wood, metal, plastic, and rubber.
What material is a typical classroom table and chair made of?
Wood (or Wooden)
What material are most forks and knives made of?
Metal
What material is used to make gloves and bands that can stretch?
Rubber
When comparing objects, what two things do we look for in their properties?
Similarities and differences
When are two objects considered similar?
They have the same properties.
When are two objects considered different?
They do not have the same properties.
What kind of objects can be placed in the same group?
Objects with the same properties.
What are two examples of objects that could be grouped together as "round"?
Bicycle wheel and exercise ball (or chocolate chip cookie).
What are some examples of objects that could be grouped together as "square"?
Cracker, pillow, and chessboard.
How do we choose which materials to use for making objects?
Based on their properties and purpose.
Why is wood a suitable material for making a chair?
It is strong, supports heavy weight, and does not break easily.
Why is rubber used to make balloons?
It can be stretched easily without breaking.
What material is used to make nails because it is strong and does not break easily?
Iron (a type of strong metal)
Why is glass a suitable material for window panes?
It is transparent (allows light to enter and we can see through it).
What are three reasons plastic is used to make water bottles?
It is light, waterproof, and does not break easily.
What is a suitable material for a raincoat and why?
Plastic (or any waterproof material) because it is waterproof and protects us from the rain.
What instruments are used to measure the size (length) of an object?
Ruler or measuring tape
What instrument is used to measure the size of a round object?
Measuring tape
What term is used to describe the measure of how much material is in an object?
Mass
What two instruments are used to measure the mass of an object?
Lever balance or electronic balance
How can you tell which object has a greater mass when using a lever balance?
It will tilt the balance downwards.
What is waste?
Old or broken objects that are thrown away.
Why should we try to reduce the amount of waste we produce?
Too much waste is harmful to the environment.
What are the three 'R's used to help the environment?
Reduce, Reuse, and Recycle.
What does it mean to "reduce" waste?
By not using or throwing things away unnecessarily (e.g., using fewer plastic bags).
What does it mean to "reuse" an object?
Using some objects again instead of throwing them away.
What is an example of "reusing" clothes?
Donating clothes that no longer fit to others.
What does it mean to "recycle"?
Making useful objects from waste materials.
What are three common materials that can be recycled into new products?
Paper, plastic, and glass.
