Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

How many high and low tides occur in a 24-hour period?

Back

2 low and 2 high tides.

Front

What causes tides on Earth?

Back

Tides are caused by the gravitational pull of the moon and the sun on Earth's oceans.

Front

What is the gravitational attraction between two objects dependent on?

Back

It depends on the masses of the objects and the distance between them.

Front

Which moon phase is visible when the moon is at position 4?

Back

Third quarter.

Front

What happens to the force of gravity when two objects are closer together?

Back

The force of gravity increases when two objects are closer together.

Front

What are spring tides?

Back

Spring tides are the highest and lowest tides that occur when the sun, moon, and Earth are aligned.

Front

What are neap tides?

Back

Neap tides are the lower high tides and higher low tides that occur when the sun and moon are at right angles to each other.

Front

What is the role of the sun in the tidal system?

Back

The sun's gravitational pull also affects tides, but to a lesser extent than the moon.

Front

How do tides affect coastal ecosystems?

Back

Tides create a dynamic environment that influences the distribution of organisms and nutrient flow.