Weigh, Mass and
Gravity
Gravity
The newton, N, is a unit of ____?
Weight
What is the name of the cloud of gas and dust that formed our solar system?
Nebula
What keeps planets moving around the Sun?
A. Gravity
B. Wind
C. Water
Answer: A. Gravity
What mainly causes tides on Earth?
A. Wind
B. The Moon’s gravity
C. Ocean currents
B. The Moon’s gravity
Which of the following is measured in kilograms (kg)?
A. Weight
B. Mass
C. Gravity
B. Mass
The Sun formed at the ______ of the solar system.
Centre
The Moon moves around the Earth in a ______.
Answer: Circle (or orbit)
What is the difference between high tide and low tide?
High tide is when the water level is at its highest; low tide is when it is at its lowest. / High Tide occurs when the gravitational pull of the moon and sun is strongest on that part of the Earth. Low Tide occurs when the water has receded because it is away from the direct gravitational pull.
What is the difference between mass and weight?
Mass is the amount of matter in an object (measured in kilograms), while weight is the force of gravity acting on that object (measured in newtons).
The planets formed before the Sun.
False
Which of these objects orbits the Earth?
A. Mars
B. The Moon
C. The Sun
B. The Moon
The Sun also affects the tides on Earth.
True
A book has a mass of 2 kg. What is its weight on Earth?
(Use gravity = 10 N/kg)
Weight = mass × gravity
Weight = 2 × 10 = 20 N
What is the big ball in the center of our solar system?
Sun
Why do astronauts float in space?
Because there is no air resistance to stop them from moving forward.
Tides happen because water is ______ by the Moon’s gravity.
Pulled
If you travel to the Moon, what happens to your mass and weight?
Your mass stays the same, but your weight decreases because gravity on the Moon is weaker.
Why do planets go around the Sun?
Because the Sun’s gravity pulls them
A satellite moves around Earth without engines. Why doesn’t it fall or fly away?
A satellite is constantly being pulled toward Earth by gravity.
At the same time, it moves sideways fast enough that it keeps “falling around” Earth rather than straight down.
This balance creates a stable orbit.
"If the high tide is at 6 AM and the location experiences two high tides each day, roughly what time will the next high tide occur? Explain your reasoning."
Two high tides per day → roughly 12 hours apart.
Add 12 hours to 6 AM → 6 PM.