Year 7 Science

Year 7 Science

100

Name at least four branches of Science

Chemistry, Physics, Astrology, Psychology etc. 

300

What is the study of biology?

Study of all living organisms

500

An interaction where both organisms benefit is called

Mutualism 

800

A key part of science is .......... ............

asking questions

1000

We find answers through ......................

observations (seriously?  Yup, and because it was hard, you can steal another team's points and add it onto yours)

Biology

100

If I am a spider, am I a vertebrate and invertebrate?

Invertebrate

300

In a food chain, the plant is known as a

Producer

500

How can an introduced species impact an ecosystem?

disruption of food chain, competition, Predation of native species, spread diseases etc. 

800

What is back burning?

is a fire management technique used to control or prevent the spread of wildfires

1000

Explain photosynthesis

is the process by which plants, algae, and some bacteria convert light energy into chemical energy stored in glucose (a type of sugar). It is essential for producing oxygen and providing energy for most life on Earth.

Chemistry

100

Substances are classified as either a ......... or a .........

mixture or pure

300

What is the symbol for Oxygen?

Oxygen

500

Is oil and water classed as a solution?

Nup.

800

What is a solvent?  Give an example please.

any liquid that dissolves another substance/s.

Water!

1000

What is the chemical symbol for water and explain it. 

• H stands for hydrogen.
• ₂ indicates there are two hydrogen atoms.
• O stands for oxygen, with one oxygen atom.

Physics

100

Define forces.

Forces are a push or a pull on an object to change its motion.

300

What is contact forces and give an example:

Forces that occur when two objects touch each other such as when you push someone over (pull a cart, there are a few)

500

What kind of force is a balanced force?

Two forces that are equal in size and opposite in direction.  When forces are balanced, an object does not move.

800

What kind of contact force slows a moving object down?

Friction (add 100 to your total score)

1000

How would you reduce friction?  Give two examples.

You would add a lubricant, such as oil and grease (multiply your total score by 1.5)

Earth and Space

100

How many planets are there is our solar system?

8

300

How many planets from the sun is Uranus?

7

500

Define:  Axis.

an imaginary line about which a body rotates

800

Why do we experience day and night on Earth?

• Rotation: Earth spins around an imaginary line called its axis, completing one full rotation approximately every 24 hours.
• Day: The side of Earth facing the Sun receives sunlight, creating daytime.
• Night: The side of Earth facing away from the Sun is in shadow, creating night time.

1000

Why do we have a leap year every 4 years?

We have a leap year because it takes 365.25 days to go around the sun. This caters for the extra quarter day each time we go round.