Water Play Equipment For Science Experimentation
Playing with water provides a great opportunity for children to develop their scientific enquiry and problem solving skills. They might notice that a toy sinks or floats and then investigate why.
This wooden water table allows you to connect it to a garden hose for continuous water flow. It also comes with natural bamboo racing chutes that can be opened and closed to regulate water speed.
In geology, the Water Table is a line beneath the surface of the ground where the soil becomes saturated with groundwater. This water is stored in the spaces between sediments and in cracks in rock and can rise to the surface to replenish rivers, lakes and streams. The configuration of the Water Table varies seasonally and from year to year in response to changes in recharge from precipitation and surface-water bodies.
In a simple homogenous and isotropic porous medium such as medium-grained sand the water table can be readily defined as a level at which all pores are water filled under gravity at less than atmospheric pressure (Figure 3). Above the water table is a capillary fringe where the water is held in pores by capillary forces against gravity at less than the atmospheric pressure. Observations of water-table conditions in a field are often made using a tensiometer, a probe with an attached hose that can be lowered into the ground to measure pore-water pressures in peds and the water table.
Generally, however, the water-table is best observed in shallow wells that are lined with perforations, called dipwells. The method suggested by Marshall and Holmes (1988) is an ideal one: an auger hole of 3.5 cm diameter is drilled down to the base of the low-permeability lens or soil horizon above which a perched water table occurs. The base of the hole is then measured to establish an accurate water-table level.
A baster is a kitchen tool used to apply sauces and gravies in a thin, even layer. It’s available with a variety of attachment heads for different uses.
The most common types of basters are made from plastic, glass or stainless steel. Plastic models are typically less expensive than their glass or water play equipment stainless steel counterparts and often BPA-free and heat-resistant. Most also have a transparent tube so you can easily see how much liquid is inside.
Glass basters are generally more expensive than plastic, but they tend to last longer and are less likely to crack from repeated use. Many of them are crafted from borosilicate glass, which is stronger than soda-lime glass and expands less when heated. Some of them have a stand for easy storage and are designed to be dishwasher-safe.
The Baster (also spelled Baaster) is a South African ethnic group descended from Cape Coloured and Griqua peoples who live mostly in Namibia. They are a member of the Unrepresented Nations and Peoples Organization, which works to “facilitate the voices of unrepresented and marginalized peoples.” A Kaptein is the leader of the Baster community. They have a democratic tradition of electing their leadership. They also have a semi-autonomous Baster Homeland (known as the Baster Gebiet) based around Rehoboth. The name comes from the Afrikaans word for bastard, which refers to half-breeds.
The colander is the kitchen’s version of a sieve, which separates solid food items from liquids. Like sieves, they can have varying degrees of mesh fineness. For example, a fine-mesh strainer may be best for pureeing foods, but it can clog quickly and be difficult to clean.
A good colander will be stable, ideally with feet or pedestal rings built into the body to keep it upright. This will prevent it from stewing and steaming over the sink, a problem that can happen with some freestanding colanders that have handles and lack secondary support. Metal colanders are particularly susceptible to this issue.
Our top pick features a wide, thick handle design with a bumpy texture that helps you maintain your grip on it, even when it’s full of scalding hot water or pasta. It also has water play equipment a deep capacity and uniform drainage holes for speedy draining. The handles are extendable so it can fit over any size of sink and the whole thing is BPA-free and dishwasher-safe.
This collapsible colander is great for people who don’t have much room to store a bulky, raised colander. It’s made from sturdy silicone, and the handles are designed to be wider and more comfortable for smaller hands to hold. It is lightweight, and it’s also easy to wash with a mild detergent.
Designed by aquarists with the welfare of the animals and safety of the people at heart. The use of a bespoke transport bag in combination with positive reinforcement behavioural training allows for safe, almost stress free, capture of large rays. The corners of the bag are rounded to prevent the rays becoming trapped or hurting themselves and a slot for luring a ray into the net with food is also included.
Unlike its reputation, the stingray is an extremely shy and even gentle creature that reserves its stinger for its predators – sharks and other large carnivorous fish. It attacks only when it is directly threatened or when unintentionally stepped on. The stinger is located in the mid-area of the tail and can secrete venom into the wound.
The Stingray “Flyer” electric net cleaner is an innovation in aquaculture technology developed by Lindgren-Pitman. The neutrally buoyant head cleans a 2-meter wide swath of the net with low-speed propellers that are fitted with patented stainless steel “Safetrak” tracks that climb above or below the surface line of rearing and smolt nets while avoiding all types of fouling such as mussels, kelp, hydroids and weeds. It is proven to be faster and safer than traditional high-pressure water cleaning.