Energy conversion & Electric circuits
Which one of these is TRUE?
a) Energy can be created
b) Energy can be destroyed
c) Energy can change from one form to another
c) Energy can change from one form to another
True or false: Heat travels from a region of higher temperature to a region of lower temperature.
a) True
b) False
a) True
What does weathering mean?
a) The removal of soil by wind and rain.
b) When a large piece of land suddenly breaks away from its original position.
c) The process that loosens and breaks down rocks at or near the surface of the Earth.
c) The process that loosens and breaks down rocks at or near the surface of the Earth.
What is kinetic energy?
a) The energy that is stored in objects
b) The energy that a moving object has.
b) The energy that a moving object has.
The energy stored in objects is called potential energy.
True or false: Sound travels away from the source of the sound in all directions.
a) True
b) False
a) True
What is the effect on the Moon's gravitational pull on the Earth. Name one thing.
- High tides, low tides
Can an electric current flow through an open circuit?
a) Yes
b) No
What is refraction?
a) The bending of light
b) The brightness of light
c) The breaking up of white light into its components colors.
a) The bending of light
What happens when the Moon passes directly between the Sun and the Earth?
a) A solar eclipse
b) A lunar eclipse
a) A solar eclipse
How many planets are there in our Solar System?
a) 6
b) 8
c) 9
b) 8
Which ones are bigger?
a) The inner planets
b) The outer planets
b) The outer planets