16 Questions
What form of energy does a moving object have?
Kinetic energy
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed, only transformed from one form to another.
What is the definition of power?
The rate at which work is done or the rate at which energy is transferred.
What is the equation for calculating density?
Density = mass/volume
What is diffusion?
The movement of particles from an area of high concentration to an area of low concentration.
What causes gas pressure?
The collisions of gas molecules with the walls of their container.
What happens to the particles when a substance is heated up?
The particles gain energy and move faster, causing the substance to expand and possibly change state.
What is a gamete?
A gamete is a mature sexual reproductive cell that unites with another cell during fertilization in organisms that reproduce sexually.
What is the male sex cell called?
The male sex cell is called sperm.
What is the female sex cell called?
The female sex cell is called egg or ovum.
Name 2 adaptations of the male sex cell.
Adaptations of the male sex cell include streamlined shape for easier movement and a long tail for propulsion.
Where are sperm cells made?
Sperm cells are made in the testes of male organisms.
Where are eggs cells made?
Egg cells are made in the ovaries of female organisms.
What controls the menstrual cycle?
The menstrual cycle is controlled by hormones, specifically estrogen and progesterone.
What does Ovulation mean?
Ovulation refers to the release of a mature egg from the ovary into the fallopian tube, ready for fertilization.
What does fertilisation mean?
Fertilization refers to the fusion of the male and female gametes (sperm and egg) to form a zygote.
Study Notes
Energy and Motion
- A moving object has kinetic energy, which is the energy of motion.
- The Law of Conservation of Energy states that energy cannot be created or destroyed, only converted from one form to another.
Power and Density
- Power is the rate at which energy is transferred or converted.
- The equation for calculating density is: density = mass / volume.
Gas Properties
- Diffusion is the process of particles moving from an area of higher concentration to an area of lower concentration.
- Gas pressure is caused by the collisions of gas particles with the walls of their container.
Changes in State
- When a substance is heated up, its particles gain kinetic energy and move faster.
Reproductive Biology
- A gamete is a reproductive cell, either a sperm or an egg.
- The male sex cell is called a sperm.
- The female sex cell is called an ovum or egg.
- Two adaptations of the male sex cell are: a flagellum for movement and a small head to contain genetic material.
- Sperm cells are made in the testes.
- Egg cells are made in the ovaries.
- The menstrual cycle is controlled by hormones produced by the pituitary gland and the ovaries.
- Ovulation is the release of an egg cell from the ovaries.
- Fertilisation is the fusion of a sperm cell with an egg cell to form a zygote.
Test your knowledge about different forms of energy with this quiz. Identify the unit of energy, understand the forms of energy related to moving objects, stored in food, fuels, and batteries, carried by moving charges, emitted by vibrating objects, and more.
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