Grade 2 Science Challenge

Nuclear fusion

Hydroelectric power

Geothermal energy

Solar wind

Orange

Green

Purple

Red, blue, yellow

Avoid consuming or touching the bottle labeled 'poison', keep it away from children and pets, and dispose of it properly.

Give it to someone as a prank

Use it as a condiment for food

Drink it to test if it's really poison

A lever is a type of inclined plane that reduces friction.

A lever is a type of wheel used to move objects vertically.

A lever is a type of pulley that lifts heavy objects.

A lever is a simple machine that works by applying a force to one end of a rigid bar to move an object located at the other end.

A pulley makes work easier by generating heat and energy.

A pulley makes work easier by changing the direction of the force applied and providing mechanical advantage.

A pulley makes work easier by reducing the distance the force needs to travel.

A pulley makes work easier by increasing friction and resistance.

Solar energy

Tidal energy

Geothermal energy

Hydroelectric energy

orange

purple

green

red, blue, yellow

To see if it's really toxic

To test your immunity

To impress others with your bravery

To prevent harm or potential death.

Place the fulcrum farther from the heavy object and apply force on the shorter end of the lever.

Place the fulcrum closer to the heavy object and apply force on the longer end of the lever.

Use a lever made of a flexible material to lift the heavy object.

Apply force on the fulcrum instead of the lever to lift the heavy object.

By providing a mechanical advantage and redirecting the force needed to lift the object.

By decreasing the number of ropes supporting the object

By increasing the friction between the pulley and the object

By changing the weight of the object being lifted