Which seeds have wings? Some examples of trees with winged seeds are pine, maple, jacaranda and catalpa. Pines. Some pine trees have small seeds with papery wings that allow the seed to rotate as it falls out of the woody female cone when it opens. Maples. Maples (Acer spp.) have propeller-type winged fruits. Bignonia Family […]
Why are waves higher in shallow water?
Why are waves higher in shallow water? Because deep-water waves do not interact with the ocean bottom as they travel, their speed is independent of the water depth. But as waves enter shallow water, interaction with the bottom alters the waves. Wave speed decreases, wavelength shortens and wave height increases. Can deep water waves and […]
Which best describes reflection and refraction in both reflection and refraction?
Which best describes reflection and refraction in both reflection and refraction? In both reflection and refraction, rays bounce off a boundary. In reflection, rays bounce off a boundary, and in refraction, rays pass through a boundary. In refraction, rays bounce off a boundary, and in reflection, rays pass through a boundary. Why is refraction called […]
What is the formula for translation?
What is the formula for translation? In the coordinate plane we can draw the translation if we know the direction and how far the figure should be moved. To translate the point P(x,y) , a units right and b units up, use P'(x+a,y+b) . How do you write a translation equation? Key Points A translation […]
Is a yoyo a weapon?
What is the difference between linear thermal expansion and volume thermal expansion?
What is the difference between linear thermal expansion and volume thermal expansion? B20. What is the difference between linear thermal expansion and volume expansion? Linear thermal expansion defines the fractional increase in length, whereas the volumetric expansion defines the fractional increase in volume per unit rise in temperature. Does concrete expand with heat? Changes in […]
How do you know if the egg is fertilized after ovulation?
How do you know if the egg is fertilized after ovulation? Some women may notice symptoms as early as 5 DPO, although they won’t know for certain that they are pregnant until much later. Early signs and symptoms include implantation bleeding or cramps, which can occur 5–6 days after the sperm fertilizes the egg. Other […]
What percentage is water vapor in the atmosphere?
What percentage is water vapor in the atmosphere? Gaseous water represents a small but environmentally significant constituent of the atmosphere. The percentage water vapor in surface air varies from 0.01% at -42 °C (-44 °F) to 4.24% when the dew point is 30 °C (86 °F). Approximately 99.13% of it is contained in the troposphere. […]
What are the effects of force in our daily life?
How do you achieve long term economic growth?
How do you achieve long term economic growth? 2. Long-term economic growth Increased capital. e.g. investment in new factories or investment in infrastructure, such as roads and telephones. Increase in working population, e.g. through immigration, higher birth rate. Increase in labour productivity, through better education and training or improved technology. What are the consequences of […]