Year 8 Science Quiz

What is the scientific name for the collar bone?

Children have less bones than adults.

What part of the body does Osteoporosis affect?

The [blank_start]pivot[blank_end] joint moves around an axis. An example of this is the [blank_start]neck[blank_end].

Aerobic Respiration is the process of releasing [blank_start]energy[blank_end] from [blank_start]food[blank_end].

Mitochondria have a nucleus.

What are the 2 waste products of aerobic respiration?

Lactic Acid builds up in [blank_start]muscle[blank_end] cells and prevents the muscles from [blank_start]contracting[blank_end] efficiently. The build-up of Lactic Acid can cause [blank_start]fatigue[blank_end], cramping and pain.

Oxygen makes air bubbles in bread.

What unit do we measure energy in?

37 degrees Celsius is the normal room temperature.

What is combustion?

What 2 things does sound do?

A vibrating object starts to produce sound [blank_start]waves[blank_end]. They travel through the air and into the ear. As the vibrating air enters the [blank_start]ear[blank_end], it is funnelled in through the ear [blank_start]canal[blank_end]. This air makes the ear drum vibrate. As the ear drum vibrates, the ossicle [blank_start]bones[blank_end] start to vibrate too. They are made [blank_start]louder[blank_end] and sent to the [blank_start]fluid[blank_end] in the cochlea. The cells in the cochlea detect them and change them to [blank_start]electrical[blank_end] signals. The auditory nerve transmits the electrical signals to the [blank_start]brain[blank_end].

Photosynthesis is the process in which plants make their own food (glucose).

What does chlorophyll do?

If my plant is small and the leaves are going yellow, it is deficient in [blank_start]nitrate[blank_end]. If the roots on my plant are small and the leaves are purple, it is deficient in [blank_start]phosphate[blank_end]. If the leaves on my plant are yellow with dead spots on them, it is deficient in [blank_start]potassium[blank_end]. If the leaves on my plant are pale and yellow, then it’s deficient in [blank_start]magnesium[blank_end].

A producer in a food chain is an organism that consumes other organisms.

What is current in a circuit measured with?

What are the 4 magnetic metals?

The pH value for a weak acid is pH9.

Is washing up liquid an acid or an alkali?