Solar system
What is the time Earth takes to complete one rotation?
24 hours.
What causes a solar eclipse?
The Moon blocks the Sun.
What process allows plants to make their own food?
Photosynthesis.
What forces act on a falling book?
Gravity and Air resistance.
What separation technique uses spinning to separate substances of different densities?
Centrifugation.
What is the reference point for measuring time zones?
The Prime Meridian at Greenwich
What causes a lunar eclipse?
Earth's shadow falls on the Moon.
What type of organism must every food chain begin with?
Producers.
What is weight?
The gravitational force acting on a mass.
Why can't dissolved sugar be removed from water by filtration?
The sugar particles are dissolved and small enough to pass through the filter.
What causes day and night?
Earth's rotation on its axis.
During which Moon phase does a lunar eclipse occur?
Full Moon.
What is a herbivore?
An organism that eats only plants.
What is gravity?
A force that attracts objects toward one another.
What separation technique involves sorting materials by physically selecting them?
Handpicking
What occurs around midday when the Sun is highest in the sky?
The shortest shadow of the day.
During which Moon phase does a solar eclipse occur?
New Moon.
What is a carnivore?
An organism that eats only animals.
How does a compass determine direction?
A compass aligns with Earth's magnetic field.
Why is sorting and separating mixtures important in daily life?
To separate useful materials so they can be recycled or reused.
If it is 1pm Perth, What time would it be in Melbourne?
3pm
What causes an Annular eclipse?
When the moon is at its Apogee (Furthest point from Earth.)
What model shows multiple interconnected feeding relationships within an ecosystem?
A food web.
Why do a hammer and a feather hit the ground together on a planet with no atmosphere?
They both fall at 9.81m/s
What is a mixture?
A mixture contains substances physically combined, not chemically joined.