Magnetism & Static Electricity
Which object is likely to stick to a magnet?
A. Plastic spoon
B. Copper coin
C. Iron nail
D. Wooden stick
C. Iron nail
How can farmers improve poor soil before planting?
A. Freeze it
B. Remove worms
C. Add compost and organic matter
D. Pour cement
C. Add compost and organic matter
What is an example of interdependence between humans and plants?
A. People live in trees
B. Humans take oxygen and give carbon dioxide
C. People eat soil
D. Trees drink soda
B. Humans take oxygen and give carbon dioxide
Why are triangles used more often than squares in strong structures like bridges or towers?
A. Triangles look better than squares
B. Triangles are easier to cut
C. Triangles do not change shape under pressure, making them more stable
D. Squares can hold more weight
C. Triangles do not change shape under pressure, making them more stable
Which stage comes immediately after a seed begins to germinate?
A. The plant dies
B. The stem and root start growing
C. The flower blooms
D. The seed flies away
B. The stem and root start growing
What type of force is magnetism?
A. Push only
B. Pull only
C. Contact force
D. Non-contact force
D. Non-contact force
What would happen to plants and animals if the soil was polluted?
A. They would grow faster
B. Plants might die, and food chains could break
C. Soil would become cleaner
D. It would attract more animals
B. Plants might die, and food chains could break
How do animals help soil stay healthy?
A. They eat all the grass
B. They pack it down
C. They mix it up and add nutrients through waste
D. They clean it with soap
C. They mix it up and add nutrients through waste
Which of these structures is most likely to collapse in strong wind?
A. A tall structure with a wide base
B. A short structure with extra supports
C. A structure made from lightweight plastic and no cross-bracing
D. A triangle-based structure made of metal
C. A structure made from lightweight plastic and no cross-bracing
What is the main purpose of a flower in a plant’s life cycle?
A. To protect the plant from animals
B. To soak up sunlight
C. To help with reproduction by making seeds
D. To hold water for the roots
C. To help with reproduction by making seeds
What causes the shock when you touch a doorknob after walking on carpet?
A. A magnet
B. Static electricity
C. Water
D. Heat
B. Static electricity
Which soil drains water the fastest?
A. Clay
B. Sand
C. Loam
D. Silt
B. Sand
How do magnetic trains benefit society compared to regular ones?
A. They use more gas
B. They cause more pollution
C. They float and reduce friction, using less energy
D. They go slower
C. They float and reduce friction, using less energy
What is the main purpose of using reinforced concrete in building large structures?
A. To make the structure look nice
B. To reduce the use of nails
C. To combine the strength of concrete and steel
D. To make it easier to carry
C. To combine the strength of concrete and steel
Which part of the plant helps spread seeds far away?
A. Roots
B. Leaves
C. Stem
D. Fruit
D. Fruit
Why do opposite magnetic poles attract each other?
A. Because they’re made of metal
B. Because they have the same charge
C. Because opposite forces pull toward each other
D. Because magnets are sticky
C. Because opposite forces pull toward each other
Which soil type has the largest particles?
A. Clay
B. Sand
C. Silt
D. Humus
B. Sand
Why is soil considered a non-renewable resource if misused?
A. It disappears every day
B. It grows on trees
C. It takes hundreds of years to form
D. It turns into metal
C. It takes hundreds of years to form
Why are arches used in the design of bridges and doorways?
A. Arches are easy to paint
B. Arches help spread the load evenly to the supports
C. Arches are shaped like smiles
D. Arches are made of soft materials
B. Arches help spread the load evenly to the supports
Why do some plants produce hundreds of seeds, but only a few grow into new plants?
A. Seeds are lazy
B. Most seeds are eaten or land in places where they can’t grow
C. The plant wants to trick animals
D. Only the big seeds can grow
B. Most seeds are eaten or land in places where they can’t grow
Which two objects are most likely to be attracted to the magnet, and why?
A. Paperclip and copper coin, because they are shiny
B. Steel screw and paperclip, because they contain iron or steel
C. Rubber band and copper coin, because they are light
D. All four objects, because magnets attract everything
B. Steel screw and paperclip, because they contain iron or steel
Why is humus important in soil?
A. It’s made of plastic
B. It helps roots float
C. It adds nutrients from decaying plants
D. It makes soil red
C. It adds nutrients from decaying plants
What happens when humans remove plants from an area for construction?
A. The soil becomes richer
B. Wildlife increases
C. The area may have more erosion and less animal shelter
D. Plants grow faster elsewhere
C. The area may have more erosion and less animal shelter
A group of students builds two towers using the same materials. One falls easily, but the other is stable and balanced. What was most likely the difference between the two towers?
A. One had brighter colors
B. One had a heavier flag on top
C. One had supports and a wide base; the other did not
D. One used glue while the other used paint
C. One had supports and a wide base; the other did not
Which of the following shows the correct order of how photosynthesis works?
A. Sunlight → Sugar → Water → Carbon dioxide
B. Carbon dioxide + water + sunlight → sugar + oxygen
C. Oxygen → Roots → Sunlight → Sugar
D. Sugar + oxygen → Water + carbon dioxide
B. Carbon dioxide + water + sunlight → sugar + oxygen